William John Duncan v. The State of Wyoming
CourtWyoming Supreme Court
Date FiledJuly 30, 2026
DocketS-25-0236
StatusPublished
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Full Opinion
THE SUPREME COURT, STATE OF WYOMING
2026 WY 86
APRIL TERM, A.D. 2026
July 30, 2026
WILLIAM JOHN DUNCAN,
Appellant
(Defendant),
v. S-25-0236
THE STATE OF WYOMING,
Appellee
(Plaintiff).
Appeal from the District Court of Sweetwater County
The Honorable Suzannah G. Robinson, Judge
Representing Appellant:
Office of Public Defender: Patricia L. Bennett, State Public Defender;* Kirk A.
Morgan, Chief Appellate Counsel; Sean H. Barrett, Senior Assistant Appellate
Counsel. Argument by Mr. Barrett.
Representing Appellee:
Keith G. Kautz, Attorney General; Jenny L. Craig, Deputy Attorney General;
Kristen R. Jones, Senior Assistant Attorney General; Donovan Burton, Assistant
Attorney General. Argument by Mr. Burton.
*An Order Substituting Patricia L. Bennett for Brandon Booth was entered on July 16, 2026.
Before BOOMGAARDEN, C.J., and GRAY, FENN, JAROSH, and HILL, JJ.
NOTICE: This opinion is subject to formal revision before publication in Pacific Reporter Third. Readers are
requested to notify the Clerk of the Supreme Court, Supreme Court Building, Cheyenne, Wyoming 82002, of
any typographical or other formal errors so that correction may be made before final publication in the
permanent volume.
FENN, Justice.
[¶1] A jury convicted William J. Duncan of six counts of sexual exploitation of a child,
one count of endangering a child, and one count of unlawful contact. The district court
sentenced Mr. Duncan to an aggregate term of 21 to 30 years in prison for the sexual
exploitation convictions, followed by five years of supervised probation. The district court
sentenced Mr. Duncan to 180-day jail sentences for the endangering a child and unlawful
contact convictions, with those sentences to run concurrently with each other but
consecutively to the sentences imposed for the sexual exploitation convictions. On appeal,
Mr. Duncan challenges the sufficiency of the evidence supporting three of the six sexual
exploitation convictions in violation of Wyoming Statute § 6-4-303(b)(ii) (2021). He
argues digital penetration and penetration with a sexual device do not constitute “explicit
sexual conduct” as defined under Wyoming Statute § 6-4-303(a)(iii) (2021). Alternatively,
if that conduct falls within the statute, he contends the jury may have returned a
nonunanimous verdict or improperly convicted him multiple times for the same underlying
conduct. He also argues on one of the six counts the State failed to prove he “enticed” the
minor child to engage in “explicit sexual conduct.” Finally, he asserts his aggregate
sentence constitutes cruel punishment in violation of Article 1, Section 14 of the Wyoming
Constitution. We affirm.
ISSUES
[¶2] Mr. Duncan presents two issues on appeal, which we rephrase and restate as the
following three issues:
I. Did the State present sufficient evidence at trial to support
Mr. Duncan’s convictions on Counts II, III, and V for
sexual exploitation of a child?
II. If his convictions on Counts II and V are supported by
sufficient evidence, did the district court commit plain
error by failing to adequately instruct the jury they needed
to unanimously agree which specific conduct formed the
basis for each count?
III. Does Mr. Duncan’s sentence constitute cruel punishment
in violation of Article 1, Section 14 of the Wyoming
Constitution?
FACTS
[¶3] Mr. Duncan’s crimes involved four minor children, his stepdaughter/adopted
1
daughter1 (Minor Child), two of the Minor Child’s friends (Friend #1 and Friend #2), and
Mr. Duncan’s son (Stepbrother). When the Minor Child was approximately eight years
old, her mother met Mr. Duncan. The two later married and, together with their children,
they moved into Mr. Duncan’s home. When Mr. Duncan entered the Minor Child’s life,
she had a strained relationship with her biological father. Mr. Duncan assumed a parental
role by, in the Minor Child’s words, “stepp[ing] up and t[aking] care of [her].”
[¶4] When the Minor Child was 12 years old, Mr. Duncan started to have sexual
conversations with the Minor Child. In some of these conversations, Mr. Duncan asked
the Minor Child to engage in sexual conduct with Friend #1 and Friend #2, while they were
sleeping over at the home shared by the Minor Child and Mr. Duncan. Mr. Duncan would
send the Minor Child text messages telling her to perform sexual acts on Friend #1, which
included asking the Minor Child to use sexual devices on Friend #1, which Mr. Duncan
had purchased for the Minor Child. On another occasion, Mr. Duncan sent the Minor Child
a link to a pornographic video depicting three individuals engaged in sexual activity and
asked the Minor Child to engage in the same conduct with Friend #1 and Friend #2, both
of whom were 12 years old at the time. The Minor Child, Friend #1, and Friend #2
complied with Mr. Duncan’s request and engaged in the conduct for a brief period.
[¶5] In addition to encouraging the Minor Child to engage in sexual acts with her friends,
Mr. Duncan encouraged the Minor Child to engage in sexual conduct with his son, the
Minor Child’s Stepbrother. The Minor Child began having sexual relations with her
Stepbrother when she was 12 years old and her Stepbrother was 14 years old, which was
also around the same time Mr. Duncan was encouraging her to engage in sexual activity
with Friend #1 and Friend #2. The Minor Child’s sexual relationship with her Stepbrother
continued from July 2022 until August 2024. In August 2024, when the Minor Child was
14 years old and her Stepbrother was 17 years old, the Stepbrother ended the sexual
relationship with the Minor Child when Mr. Duncan adopted the Minor Child, because the
Stepbrother was no longer comfortable continuing with the relationship. Around this same
time, Mr. Duncan text messaged the Minor Child and told her to: “Go lay on [your
Stepbrother’s] bed and play with your p[****].” Mr. Duncan told the Minor Child if she
did what he asked, her Stepbrother would not be able to tell her no.
[¶6] In October 2024, law enforcement received an anonymous report concerning the
Minor Child having sexual relations with her Stepbrother. A detective met with the Minor
Child’s mother and requested performing a forensic interview of the Minor Child.
However, the mother declined and stated the matter would be addressed at home. The
Minor Child later told her mother she had been having sexual relations with her
Stepbrother, and Mr. Duncan had been encouraging the behavior.
1
At the outset of the period of the charged conduct, the Minor Child was Mr. Duncan’s stepdaughter.
However, Mr. Duncan adopted the Minor Child in July 2024, approximately eight months before the State
charged him.
2
[¶7] At some point, Mr. Duncan messaged the Minor Child and instructed her to “go in
and permanently delete all [of her] deleted messages.” He further told her that he needed
to know exactly what the Minor Child had said because what she’s “done . . . could destroy
[their] family, businesses and way of life.” The Minor Child’s mother later confronted Mr.
Duncan with the Minor Child present. During the confrontation, Mr. Duncan yelled at the
Minor Child and told her to “keep [her] mouth shut . . . and if [she] keep[s] [her] mouth
shut, nothing bad would happen and [she] just need[ed] to stop talking.” He then placed
his hand over the Minor Child’s mouth, so the Minor Child bit his hand, pulled away, and
left the vicinity.
[¶8] On January 20, 2025, law enforcement responded to a report of a domestic dispute
at a counseling office and was directed to a back room, where officers contacted the Minor
Child. Detectives conducted a forensic interview of the Minor Child and completed a
forensic download of her phone. Following an investigation, Mr. Duncan was charged
with six counts of sexual exploitation of a child in violation of Wyoming Statute § 6-4-
303(b)(ii), two counts of endangering children in violation of Wyoming Statute § 6-4-
403(b)(i) (2021), and one count of unlawful contact without bodily injury in violation of
Wyoming Statute § 6-2-501(g)(i) (2021). The State subsequently moved to amend the
information by dismissing one of the endangering children counts.
[¶9] A three-day jury trial commenced on July 7, 2025. The jury found Mr. Duncan
guilty of all counts. The district court sentenced Mr. Duncan to 180 days in jail on the
endangering a child count (Count VII) and the unlawful contact without bodily injury count
(Count VIII), with those sentences to run concurrently. The district court also awarded 144
days of credit for presentence confinement. For the six exploitation of a child convictions
(Counts I through VI), the district court imposed sentences of not less than seven nor more
than ten years in prison on each count, with one count suspended in lieu of five years of
supervised probation. All six exploitation convictions were ordered to run consecutively
to the sentences for endangering a child, Count VII, and unlawful contact without bodily
injury, Count VIII. Because the offenses involved four separate minor children, the district
court structured the sentences for the six sexual exploitation convictions by imposing one
sentence for each child: three consecutive prison terms of seven to ten years and a fourth
sentence of seven to ten years, which the court suspended in favor of five years of
supervised probation. In the aggregate, Mr. Duncan received a total term of incarceration
of 21 to 30 years, followed by five years of supervised probation, for all six of his sexual
exploitation convictions. Mr. Duncan timely appealed.
STANDARD OF REVIEW
[¶10] Mr. Duncan argues the State failed to present sufficient evidence to support his
convictions of sexual exploitation of a child in violation of Wyoming Statute § 6-4-
303(b)(ii) for Counts II, III, and V.
3
In reviewing for sufficiency of the evidence, we must decide
whether the evidence could reasonably support the jury’s
verdict. We do not reweigh the evidence or reexamine the
credibility of the witnesses. Instead, we examine the evidence
in the light most favorable to the State. We accept all evidence
favorable to the State as true and give the State’s evidence
every favorable inference which can reasonably and fairly be
drawn from it. We disregard any evidence favorable to the
appellant that conflicts with the State’s evidence.
Wilson v. State, 2024 WY 34, ¶ 3, 545 P.3d 435, 436–37 (Wyo. 2024) (citation modified).
[¶11] In an alternative argument, Mr. Duncan claims the jury may have returned a
nonunanimous verdict or improperly convicted him multiple times for the same underlying
conduct in Counts II and V. We review this argument for plain error, because Mr.
Duncan’s counsel did not object to the jury instructions, which differentiated between the
underlying conduct involved for each count. Townsend v. State, 2025 WY 108, ¶ 15, 576
P.3d 1254, 1259 (Wyo. 2025) (“When a party does not object to a jury instruction at trial,
we review that instruction for plain error.”) (citing Walker v. State, 2022 WY 158, ¶ 17,
521 P.3d 967, 976 (Wyo. 2022)).
[¶12] Mr. Duncan also challenges the constitutionality of his sentence, which is a question
of law. See Castaner v. State, 2026 WY 25, ¶ 15, 584 P.3d 454, 461 (Wyo. 2026);
Martinson v. State, 2023 WY 88, ¶ 14, 534 P.3d 913, 917 (Wyo. 2023). Issues involving
the constitutionality of a sentence “are reviewed ‘under a de novo standard of review and
we afford no deference to the district court’s determinations on the issues.’” Castaner, ¶ 15,
584 P.3d at 461 (quoting Bear Cloud v. State, 2014 WY 113, ¶ 13, 334 P.3d 132, 137 (Wyo.
2014)).
DISCUSSION
[¶13] Mr. Duncan challenges the sufficiency of the evidence supporting his convictions
for sexual exploitation of a child as charged in Counts II, III, and V of the amended
information. With respect to Counts II and V, he contends the jury may have returned a
nonunanimous verdict based on the same underlying conduct. Lastly, he argues his
aggregate sentence on the six child exploitation convictions constitutes cruel punishment
in violation of Article 1, Section 14 of the Wyoming Constitution. We address each
argument in turn.
I. Sufficient evidence supported Mr. Duncan’s convictions for sexual exploitation
of a child for Counts II, III, and V under Wyoming Statute § 6-4-303(b)(ii).
4
[¶14] Mr. Duncan was convicted of six counts of sexual exploitation of a child (Counts I
through VI) in violation of Wyoming Statute § 6-4-303(b)(ii). Pursuant to Wyoming
Statute § 6-4-303(b)(ii):
(b) A person is guilty of sexual exploitation of a child if, for
any purpose, he knowingly:
* * *
(ii) Causes, induces, entices or coerces a child to engage
in, or be used for, any explicit sexual conduct;
[¶15] First, Mr. Duncan argues there is insufficient evidence to support his convictions
for Counts II and V because the conduct he encouraged does not constitute “explicit sexual
conduct” as defined under Wyoming Statute § 6-4-303(a)(iii). Second, he challenges the
sufficiency of the evidence supporting Count III, involving the Minor Child’s Stepbrother,
arguing he did not “entice” the Minor Child to engage in explicit sexual conduct but instead
encouraged her to be open and honest with him about the Minor Child’s relationship with
her Stepbrother.
A. Mr. Duncan’s conduct of encouraging the Minor Child to digitally
penetrate and use sexual devices on Friend #1 constitutes “explicit sexual
conduct,” and the convictions on Counts II and V were supported by
sufficient evidence.
[¶16] For Counts II and V, Mr. Duncan was charged with sexual exploitation of a minor
based on conduct involving digital penetration and penetration using a sexual device. For
Count II, the jury was instructed Mr. Duncan was charged with: “Knowingly; Entic[ing] a
child, [Minor Child]; To engage in; Any explicit sexual conduct, namely digital penetration
of [Friend #1].” For Count V, the jury was instructed Mr. Duncan was charged with:
“Knowingly; Entic[ing] a child, [Minor Child]; To engage in; Any explicit sexual conduct,
namely penetration with sexual devices of [Friend #1].” Mr. Duncan argues Counts II and
V, as charged and presented to the jury, do not fall within the offense of sexual exploitation
of a child because digital penetration and penetration using a sexual device do not
constitute “explicit sexual conduct” as defined by Wyoming Statute § 6-4-303(a)(iii). He
asserts that, because the charged conduct falls outside the statutory definition of “explicit
sexual conduct,” the jury could not reasonably have found the evidence sufficient to
support his convictions on Counts II and V. The State argues the jury could have
reasonably found Mr. Duncan guilty of sexual exploitation of a child as charged in Counts
II and V because the conduct underlying those convictions constitutes masturbation, which
is expressly included as a form of “explicit sexual conduct” under the statute. We agree
with the State.
5
[¶17] Wyoming Statute § 6-4-303(a)(iii) defines explicit sexual conduct as: “actual or
simulated sexual intercourse, including genital-genital, oral-genital, anal-genital or oral-
anal, between persons of the same or opposite sex, bestiality, masturbation, sadistic or
masochistic abuse or lascivious exhibition of the genitals or pubic area of any person[.]”
Wyo. Stat. Ann. § 6-4-303(a)(iii) (emphasis added). The word masturbation is not defined
under Wyoming Statute § 6-4-303. When a criminal statute does not define a term, we
presume the legislature did not mean for the term to have a specialized meaning, and we
apply its common definition. Schuerman v. State, 2022 WY 160, ¶ 15, 522 P.3d 145, 149
(Wyo. 2022) (citing Bernal-Molina v. State, 2021 WY 90, ¶ 17, 492 P.3d 904, 909; Marfil
v. State, 2016 WY 12, ¶ 25, 366 P.3d 969, 975–76 (Wyo. 2016)). The American Heritage
Dictionary defines “masturbation” as: “[e]xcitation of one’s own or another’s genital
organs, usually to orgasm, by manual contact or means other than sexual intercourse.”
Masturbation, The American Heritage Dictionary of the English Language (5th ed. 2022),
https://www.ahdictionary.com/word/search.html?q=masturbation (last visited June 19,
2026). Similarly, Merriam-Webster defines “masturbation” as: “erotic stimulation
especially of one’s own genital organs . . . by manual or other bodily contact exclusive of
sexual intercourse, by instrumental manipulation . . . or by various combinations of these
agencies.” Masturbation, Merriam-Webster Dictionary, https://www.merriam-web-
ster.com/dictionary/masturbation (last visited June 19, 2026) (emphasis added).
[¶18] Applying these common definitions of masturbation to the crime of sexual
exploitation of a child, Mr. Duncan, for any purpose, must have enticed the Minor Child to
engage in exciting Friend #1’s genital organs by manual contact, instrumental
manipulation, or means other than sexual intercourse. This includes enticing the Minor
Child to engage in conduct such as digital penetration or the use of a sexual device on
Friend #1’s genital organs. The Minor Child testified that when she was approximately 12
years old Mr. Duncan discussed with her how to engage in sexual activity with Friend #1.
She testified Mr. Duncan would message her about putting her fingers inside of Friend #1’s
vagina or “[p]utting [her] mouth and face in” the area of Friend #1’s vagina. She further
stated Mr. Duncan sent her text messages about using sexual devices on Friend #1, which
the Minor Child stated meant using a piece of silicone and “putting [it] inside of [Friend
#1].”
[¶19] Friend #1 testified Mr. Duncan “would ask [the Minor Child and Friend #1] to do
sexual things with each other.” She stated during sleepovers at the Minor Child’s house,
Mr. Duncan would text the Minor Child telling her how to engage in sexual contact with
Friend #1. Friend #1 stated the Minor Child would show her the messages, and the two
girls would often do what Mr. Duncan requested. She testified to seeing a message Mr.
Duncan sent to the Minor Child asking her “to use toys on [Friend #1] that [Mr. Duncan]
had bought for” the Minor Child. In a recovered text message conversation, Mr. Duncan
discussed with the Minor Child her first sexual experience with Friend #1. Mr. Duncan
discussed the Minor Child having “magic fingers” and stated the Minor Child “must be
practicing more.” The Minor Child testified she understood Mr. Duncan’s messages about
6
“magic fingers” to mean he was referring to the way she “put[] [her] fingers inside of
[Friend #1’s] vagina.”
[¶20] Viewing the above evidence in the light most favorable to the State and disregarding
any evidence favorable to Mr. Duncan, there is sufficient evidence supporting Mr. Duncan,
for any purpose, enticed the Minor Child to engage in “explicit sexual conduct” by enticing
the Minor Child to engage in the act of masturbation on Friend #1 through digital
penetration and the use of sexual devices. A jury could reasonably conclude Mr. Duncan
committed sexual exploitation of a child as charged in Counts II and V.
B. The evidence was sufficient to support Mr. Duncan’s conviction on Count
III for enticing the Minor Child to engage in sexual intercourse with her
Stepbrother.
[¶21] In his next sufficiency of the evidence argument, Mr. Duncan challenges his
conviction for sexual exploitation of a child as charged in Count III. He argues the
evidence was insufficient to establish he “enticed” the Minor Child to engage in sexual
intercourse with her Stepbrother. He asserts his conduct did not meet the statutory
definition of “entice” because he was merely encouraging the Minor Child to be open and
honest with him about her relationship with her Stepbrother.
[¶22] As discussed above, “[a] person is guilty of sexual exploitation of a child if, for any
purpose, he knowingly . . . “[c]auses, induces, entices or coerces a child to engage in, or be
used for, any explicit sexual conduct[.]” Wyo. Stat. Ann. § 6-4-303(b)(ii). For Count III,
the jury was instructed; “On or about the 1st day of July, 2022; . . . ; The Defendant,
WILLIAM JOHN DUNCAN; For any purpose; Knowingly; Enticed a child, [Minor
Child]; To engage in; Any explicit sexual conduct, namely sexual intercourse with [her
Stepbrother].” (emphasis added). Because Wyoming Statute § 6-4-303 does not define the
word “entice,” we apply the ordinary dictionary definition of “entice.” See Schuerman,
2022 WY 160, ¶ 15, 522 P.3d at 149. Black’s Law Dictionary defines “entice” as “[t]o
lure or induce; esp., to wrongfully solicit (a person) to do something.” Entice, Black’s Law
Dictionary (West 12th ed. 2024); see also Blakeman v. State, 2004 WY 139, ¶ 18–22, 100
P.3d 1229, 1235 (Wyo. 2004) (defining “solicit” as “to tempt or to entice someone to do
wrong”). The American Heritage dictionary defines entice: “To attract (someone), usually
to do something, by arousing hope, interest, or desire[.]” Entice, The American Heritage
Dictionary of the English Language (5th ed. 2022),
https://www.ahdictionary.com/word/search.html?q=entice (last visited June 23, 2026).
[¶23] On the morning of July 1, 2022, Mr. Duncan exchanged text messages with the
Minor Child after she had fallen asleep the previous night in the bedroom of her 14-year-
old Stepbrother. At the time, the Minor Child was 12 years old. The text messages were
as follows:
7
Mr. Duncan: Hello
Mr. Duncan: I need to know what happened last night. I’m not
here to judge but I need you to be 100% honest
with me.
Minor Child: I promise nothing happened
Mr. Duncan: [Minor Child], listen, mom says you were being
a little shady, running back upstairs to talk with
[Stepbrother]. It sure appears like something
happened. Why was the door locked?
Minor Child: The door was being wierd [sic] I tried to get water
last night and I couldn’t get the sore [sic] open
Mr. Duncan: Like I said, I’m not here to judge or punish. But I
need the truth. You were honest with me about
[Friend #1].
Minor Child: I know but nothing happened
Mr. Duncan: Ok. So, if that is the answer and I find out
differently later, they [sic] way that you and I
communicate and trust is going to be a lot
different.
Minor Child: I know
Mr. Duncan: Ok. I will believe you and I will go to bat for you
with mom. Don’t make me look foolish later.
Minor Child: I won’t. I promise
Mr. Duncan: By that I mean, finding out something did happen.
Like I told mom, I wouldn’t even blame you two.
You’re both good looking kids and horny as hell
and not blood related. Seems too easy. Just don’t
make me look stupid later. I’m going to tell her
nothing happened. I am trusting you.
Minor Child: Ok
8
Minor Child: I promise nothing did
Mr. Duncan: Ok. No more sleeping in boys rooms.
Minor Child: I know I fell asleep in the chair
A couple weeks after the Minor Child fell asleep in her Stepbrother’s room, the Minor
Child and her Stepbrother began engaging in sexual conduct. The Minor Child testified
she told Mr. Duncan about the sexual relationship with her Stepbrother and Mr. Duncan
encouraged that relationship.
[¶24] The Minor Child testified she and Mr. Duncan had conversations that were sexual
in nature via text message and in person. Around the same time as the above text message
conversation occurred, Mr. Duncan was text messaging the Minor Child about performing
digital penetration on Friend #1 and asking the Minor Child to engage in sexual conduct
with Friend #1 and Friend #2, including by using sexual devices Mr. Duncan had purchased
for the Minor Child. When the Minor Child was 14 and her Stepbrother was 17, their
sexual relationship ended because her Stepbrother became uncomfortable after Mr. Duncan
adopted the Minor Child. Around the same time, Mr. Duncan text messaged the Minor
Child stating: “Go lay on [your Stepbrother’s] bed and play with your p[****] and he won’t
be able to say no to you.”
[¶25] Our standard of review requires us to look at the evidence in the light most favorable
to the State and give every favorable inference to the State’s evidence. Wilson, 2024 WY
34, ¶¶ 3, 18, 545 P.3d at 436–37, 439. Under that standard, the jury could reasonably infer
Mr. Duncan enticed the Minor Child to engage in sexual intercourse with her Stepbrother
because he lured, induced, attracted, or aroused the Minor Child’s interest or desire in,
engaging in sexual intercourse with her Stepbrother. The evidence shows Mr. Duncan
encouraged the Minor Child to engage in sexual conduct, including with her Stepbrother,
and even at one point told the Minor Child to go lie on her Stepbrother’s bed and perform
sexual acts. There was sufficient evidence at trial to support Mr. Duncan’s conviction for
sexual exploitation of a child as charged in Count III.
II. Mr. Duncan has not shown the district court committed plain error by failing to
adequately instruct the jury that it was required to unanimously agree on the
specific conduct forming the basis for Counts II and V, which involved the Minor
Child and Friend #1.
[¶26] Although not set out as a separate issue in his brief, during his discussion of the
sufficiency of the evidence, Mr. Duncan raised an issue regarding the sufficiency of the
jury instructions. Mr. Duncan contends that if his convictions on Counts II and V are
supported by sufficient evidence because digital penetration and penetration using a sexual
device are “explicit sexual conduct,” then the jury may have returned a nonunanimous
9
verdict or improperly convicted him multiple times for the same underlying conduct in the
sexual exploitation charges involving the Minor Child and Friend #1.
[¶27] Mr. Duncan did not object to the jury instructions at trial and affirmatively agreed
to the jury instructions and the way they distinguished the conduct underlying each count.
Therefore, our review is for plain error. See Townsend, 2025 WY 108, ¶ 15, 576 P.3d at
1259 (“When a party does not object to a jury instruction at trial, we review that instruction
for plain error.”) (citing Walker, 2022 WY 158, ¶ 17, 521 P.3d at 976). “To establish plain
error, [Mr. Duncan] must establish first, the record clearly presents the incident alleged to
be error; second, a clear and unequivocal rule of law was violated in a clear and obvious,
not merely arguable, way; and third, he was denied a substantial right resulting in material
prejudice against him.” Id. (citation modified).
[¶28] The first prong of the plain error test is met because the challenged jury instructions
appear in the record. However, Mr. Duncan cannot satisfy the second prong of the plain
error test because he failed to show the district court violated a clear and unequivocal rule
of law. The record reflects the jury instructions distinguished between each count and the
separate conduct underlying each charge. During an informal jury instruction conference,
the State requested to modify all the element instructions for the sexual exploitation charges
to include the names of the children involved and to specify the conduct charged in each
count. At the formal jury instruction conference, defense counsel expressly agreed to the
instruction for Count II, stating he had no objection and in fact “request[ed] it as well.”
Similarly, the district court modified the instructions for the remaining sexual exploitation
charges to identify the specific child involved and the conduct alleged in each count.
Defense counsel did not object to any of the instructions as modified and further requested
the jury be instructed that “each count [is] to be considered separately.”
[¶29] Consistent with defense counsel’s request, the jury was instructed that “[e]ach
count, and the evidence pertaining to it, should be considered separately[.]” With respect
to Count II, the jury was instructed the elements as charged were: “On or about the 10th
day of June, 2022; . . . ; The Defendant, WILLIAM JOHN DUNCAN; For any purpose;
Knowingly; Enticed a child, [the Minor Child]; To engage in; Any explicit sexual conduct,
namely digital penetration of [Friend #1].” Although Mr. Duncan does not contest Count
IV, he was also charged with sexual exploitation involving the Minor Child and Friend #1
in Count IV. For Count IV, the jury was instructed the elements of that charge involved:
“sexual intercourse with [Friend #1]” on or between August 1, 2020, and December 31,
2022. For Count V, the jury was instructed the elements as charged involved “namely
penetration with sexual devices of [Friend #1].”
[¶30] During closing argument, the State distinguished each count and identified the
specific conduct supporting each charge. For Count II, the State pointed to Exhibit 1a, in
which Mr. Duncan referenced the Minor Child using “magic fingers” on Friend #1, and the
Minor Child testified the term referred to digital penetration. The State argued Count II
10
involved Mr. Duncan enticing the Minor Child to digitally penetrate Friend #1. The State
contended Count IV was based on messages Mr. Duncan sent to the Minor Child telling
her to perform oral sex on Friend #1. Finally, regarding Count V, the State argued this
count was based on a message Friend #1 observed on the Minor Child’s phone where Mr.
Duncan directed the Minor Child to use a sexual device he purchased on Friend #1.
[¶31] A review of the jury instructions show they were carefully tailored to distinguish
the conduct underlying each count, identified the specific conduct associated with each
charge, and directed the jury to consider each count separately. The State’s closing
argument also identified the conduct supporting each count, consistent with the jury
instructions, further ensuring the jury understood which alleged act corresponded to each
count. Under these circumstances, Mr. Duncan cannot establish there is a reasonable
probability the jury did not unanimously agree on each of these counts. Townsend, 2025
WY 108, ¶¶ 24–25, 576 P.3d at 1261 (holding the appellant could not establish plain error
when the jury instructions differentiated the charged conduct by separately identifying the
acts underlying two of the three counts and directed the jury to consider each count
independently); Cf. Walker, 2022 WY 158, ¶¶ 54, 67, 521 P.3d at 985–87 (finding the lack
of distinguishing language in the jury instructions combined with “facts supporting [two
of three identical counts] and the closing argument [did] nothing to clarify these counts for
the jury[,]” created “a reasonable probability that the jury did not reach unanimity” on those
counts). We therefore find Mr. Duncan cannot establish plain error. See Townsend, 2025
WY 108, ¶¶ 24–25, 576 P.3d at 1261.
III. Mr. Duncan’s sentence does not constitute cruel punishment in violation of
Article 1, Section 14 of the Wyoming Constitution.
[¶32] In Mr. Duncan’s last argument, he challenges the sentences imposed with respect to
the six counts of sexual exploitation of a child and does not contest the sentences he
received for Count VII, endangering children, and Count VIII, unlawful contact without
bodily injury. Mr. Duncan argues his aggregate sentence of 21 to 30 years in prison
followed by a probationary term of five years for the six sexual exploitation convictions is
grossly disproportionate to the gravity of his crimes. He argues his sentence constitutes a
cruel punishment under Article 1, Section 14 of the Wyoming Constitution.
[¶33] The prohibition against cruel or unusual punishment under Article 1, Section 14 of
the Wyoming Constitution “prohibits punishment that is grossly disproportional to the
gravity of the crime.” Martinson, 2023 WY 88, ¶¶ 29–30, 534 P.3d at 921. To determine
whether a punishment is cruel under Article 1, Section 14, we look to whether the
“punishment is so grossly disproportionate to the offense that it shocks the moral sense of
the people.” Hicks v. State, 2025 WY 113, ¶¶ 116–117, 578 P.3d 366, 396–97 (Wyo. 2025).
First, this Court determines if the punishment is grossly disproportionate to the offense by
“consider[ing] the gravity of the offense to the harshness of the penalty.” Id. In doing so,
this Court looks at the offender’s actual criminal conduct. Id.; see also Martinson, 2023
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WY 88, ¶¶ 32–33, 534 P.3d at 921–22. Only if we determine the punishment is grossly
disproportionate to the crime will we determine whether the punishment shocks the moral
sense of the people by considering “the sentences imposed on similarly situated defendants
in this and other jurisdictions[.]” Hicks, ¶ 117, 578 P.3d at 397; Martinson, ¶ 30, 534 P.3d
at 921.
[¶34] For the six convictions of sexual exploitation of a child, Mr. Duncan faced a
maximum term of imprisonment of not less than 30 years nor more than 72 years. See Wyo.
Stat. Ann. § 6-4-303(c) (“The sexual exploitation of a child pursuant to paragraphs (b)(i)
through (iii) of this section is a felony punishable by imprisonment for not less than five
(5) years nor more than twelve (12) years, a fine of not more than ten thousand dollars
($10,000.00), or both.”). When imposing its sentence, the district court noted there were
four children involved, and it was ordering a separate sentence for each of the four children,
which it did by ordering three consecutive sentences of seven to ten years, and one sentence
of seven to ten years suspended in lieu of five years of supervised probation. The district
court noted Mr. Duncan took the Minor Child’s “desire to have a father figure and . . .
twisted it and manipulated it over the course of years [and] normalized the behavior[.]” It
stated Mr. Duncan was “very clearly encouraging [his] stepdaughter [(the Minor Child)] to
have sexual discussions with [him] and then to act on them with children, children that
[Mr. Duncan] had no close relationship with” as well as with the Minor Child’s
Stepbrother.
[¶35] The evidence in the record supports the district court’s conclusions. When the
Minor Child was 12 years old Mr. Duncan asked the Minor Child to engage in sexual
conduct, including telling the Minor Child to use sexual devices on Friend #1 that Mr.
Duncan had purchased for the Minor Child. Mr. Duncan also sent pornographic videos to
the Minor Child. On one occasion when the Minor Child was 12 years old, Mr. Duncan
sent the Minor Child a link to a pornographic video showing three people engaged in sexual
activity and asked her to do what was in the video with Friend #1 and Friend #2, both of
whom were 12 years old. The Minor Child, Friend #1, and Friend #2 engaged in the sexual
conduct Mr. Duncan requested for a brief period. In addition to encouraging sexual
conduct between the Minor Child and her two friends, Mr. Duncan encouraged the Minor
Child to engage in sexual conduct with her Stepbrother, when the Stepbrother was 14 years
old and the Minor Child was 12 years old. At one point, when the Stepbrother no longer
wanted to engage in sexual conduct with the Minor Child because Mr. Duncan had adopted
the Minor Child, Mr. Duncan text messaged the Minor Child stating “Go lay on [your
Stepbrother’s] bed and play with your p[****] and he won’t be able to say no to you.” At
this point the Minor Child was 14 years old and her Stepbrother was 17 years old.
[¶36] The text messages introduced at trial and during the sentencing hearing show Mr.
Duncan initiated sexual conversations with the Minor Child, including discussing the
Minor Child digitally penetrating her friend; implying the Minor Child should kiss her
friend; telling the Minor Child about sexual devices; teaching the Minor Child about sexual
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activity; as well as telling the Minor Child to go knock on her Stepbrother’s door, “flash
him and run away” and telling her “[t]his is part of being a beautiful woman. You get to
have fun with the men that admire you.” Mr. Duncan also told the Minor Child to delete
her messages and to make sure they were permanently deleted. The Minor Child testified
that she deleted all the sexual messages because she “knew that [she] was supposed to
delete everything so [Mr. Duncan] didn’t get in trouble” and her mother would not divorce
Mr. Duncan. The detective who performed a forensic download of the Minor Child’s
phone testified the messages recovered from the phone indicate messages from Mr. Duncan
to the Minor Child were deleted from the phone.
[¶37] Mr. Duncan’s conduct in sexually exploiting the Minor Child caused sexual activity
to occur between the Minor Child and three other minor children. We find no error in the
district court’s decision to impose consecutive sentences for each of the four children
affected by Mr. Duncan’s conduct. The aggregate sentence of 21 to 30 years imprisonment,
followed by a five-year term of supervised probation, is not grossly disproportionate to the
gravity of Mr. Duncan’s criminal conduct, particularly given he could have been sentenced
to between 30 years and 72 years in prison for his convictions. We therefore do not need
to consider whether Mr. Duncan’s sentence shocks the moral sense of the people, and we
decline his invitation to compare his sentence to those in other criminal cases.
CONCLUSION
[¶38] Mr. Duncan’s conduct in encouraging the Minor Child to digitally penetrate and use
sexual devices on another child, Friend #1, falls within the statutory definition of “explicit
sexual conduct.” Mr. Duncan’s convictions for Counts II, III, and V are supported by
sufficient evidence. Mr. Duncan cannot establish the district court committed plain error
because the jury was adequately instructed on the separate conduct underlying each count.
Mr. Duncan’s sentence for all six of his convictions of sexual exploitation of a child is not
grossly disproportionate to his conduct and did not amount to cruel punishment in violation
of Article 1, Section 14 of the Wyoming Constitution. Affirmed.
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