People of Guam v. Joseph Marc Thomas Duenas Castro, Jr., aka Joseph Marc Castro, Jr., aka Joseph Mark Thomas Duenas Castro Jr., aka Joseph Mark Castro, Jr., aka Joseph M.T.D. Castro, aka Joey

2025 Guam 9
CourtSupreme Court of Guam
DecidedDecember 15, 2025
DocketCRA23-004
StatusPublished

This text of 2025 Guam 9 (People of Guam v. Joseph Marc Thomas Duenas Castro, Jr., aka Joseph Marc Castro, Jr., aka Joseph Mark Thomas Duenas Castro Jr., aka Joseph Mark Castro, Jr., aka Joseph M.T.D. Castro, aka Joey) is published on Counsel Stack Legal Research, covering Supreme Court of Guam primary law. Counsel Stack provides free access to over 12 million legal documents including statutes, case law, regulations, and constitutions.

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People of Guam v. Joseph Marc Thomas Duenas Castro, Jr., aka Joseph Marc Castro, Jr., aka Joseph Mark Thomas Duenas Castro Jr., aka Joseph Mark Castro, Jr., aka Joseph M.T.D. Castro, aka Joey, 2025 Guam 9 (guam 2025).

Opinion

IN THE SUPREME COURT OF GUAM

PEOPLE OF GUAM, Plaintiff-Appellee,

v.

JOSEPH MARC THOMAS DUENAS CASTRO, JR., aka Joseph Marc Castro, Jr., aka Joseph Mark Thomas Duenas Castro Jr., aka Joseph Mark Castro, Jr., aka Joseph M.T.D. Castro, aka Joey, Defendant-Appellant.

Supreme Court Case No. CRA23-004 Superior Court Case No. CF0504-21

OPINION

Appeal from the Superior Court of Guam Argued and submitted on November 17, 2023 Hagåtña, Guam

Appearing for Defendant-Appellant: Appearing for Plaintiff-Appellee: William Benjamin Pole, Esq. Christine Santos Tenorio, Esq. Law Offices of William B. Pole, P.C. Assistant Attorney General 456 W. O’Brien Dr., Ste. 104 Office of the Attorney General Hagåtña, GU 96910 General Crimes Division 134 W. Soledad Ave., Ste. 301 Hagåtña, GU 96910 People v. Castro, 2025 Guam 9, Opinion Page 2 of 32

BEFORE: ROBERT J. TORRES, Chief Justice; F. PHILIP CARBULLIDO, Associate Justice; and KATHERINE A. MARAMAN, Associate Justice.

MARAMAN, J.:

[1] Defendant-Appellant Joseph Marc Thomas Duenas Castro, Jr., appeals his conviction on

two charges of criminal sexual conduct, including one count in the first degree (“CSC I”) for sexual

penetration and three counts in the second degree (“CSC II”) for sexual contact. Castro was

sentenced to thirty years’ imprisonment for the CSC I charge and ten years’ imprisonment for each

of the three CSC II counts, to be served concurrently with the CSC I sentence.

[2] Castro’s challenge focuses on (1) whether there is sufficient evidence to support all four

convictions; (2) whether Guam law prohibits conviction for both CSC I and CSC II where the

charges are based on the same underlying sexual act, not separate in time; (3) whether the language

defining “sexual contact” must be incorporated with the essential element instructions for CSC II

if it is provided elsewhere in the jury instructions; and (4) whether the court erred when it

prohibited Castro from eliciting testimony about a sexual relationship between the victim and a

third-party witness, notwithstanding Guam’s rape shield statute. We reverse in part and affirm in

part.

I. FACTUAL AND PROCEDURAL BACKGROUND

[3] Castro was initially indicted on two counts of CSC I and four counts of CSC II, involving

a female minor identified as K.B. All counts allegedly occurred between January 1, 2019, and

December 31, 2019. K.B. was between nine and ten years old at the time of the alleged acts.

[4] Both of the CSC I charges were for sexual penetration, “to wit: cunnilingus,” occurring at

different times during the charging period. Record on Appeal (“RA”), tab 9 at 2 (Indictment, Oct.

21, 2021). These charges were mirrored by two CSC II charges alleging that Castro “caused his People v. Castro, 2025 Guam 9, Opinion Page 3 of 32

mouth to touch the primary genital area of” a minor, also occurring at different times. Id. at 2-3

(Second Charge, Counts One and Two). Two other CSC II charges alleged that Castro caused his

hand to touch K.B.’s primary genitals (Second Charge, Count Three) and caused K.B.’s hand to

touch his primary genital area (Second Charge, Count Four). Id. at 3-4. Castro testified in his

defense and denied the charges.

[5] K.B. testified about two instances involving CSC that took place sometime during 2019.

The first instance occurred in a parking lot at Apaca Point Beach, and the second occurred later in

a bedroom at her family’s residence. Throughout the testimony, K.B. used the language “private

area” to describe both her and Castro’s genitals. Transcript (“Tr.”) at 105-15 (Jury Trial Day 1,

June 28, 2022). The following testimony was presented on direct examination to establish what

K.B. meant by “private area”:

Q Okay. When you say he made you touch “his area”, what area are you talking about? A His private area. Q Now, when you say -- let me give you some different language and you tell me which one works, okay? All right. When you say his “private area”, do you mean his penis? A Yes. Q Okay. Does it also mean his butt? A No. Q So we’re just talking about his penis? A Yes. Q Okay. And when you say your private area, are you talking about your breasts? A No. Q Are you talking about your vagina? A Yes.

Id. at 109. People v. Castro, 2025 Guam 9, Opinion Page 4 of 32

[6] As to the conduct at Apaca Point, K.B. testified that one day, Castro came home and told

her they were “gonna go and get [her] nana some water.” Id. at 106. Instead of going to get water,

Castro took K.B. to Apaca Point, which she described as “pretty hidden.” Id. Then K.B. claimed,

“He made me touch his area and he -- he touched mine.” Id. at 109. K.B. said Castro removed his

pants and made her touch his “private area” when “he took my hand, and he placed it on his area,

and he started moving my hand with his.” Id. at 110. When asked how she was moving her hand,

K.B. said, “[H]e made me grip and he kept moving my hand up and down,” gesturing with her

hand in a straight up and down motion. Id. On cross-examination, K.B. said, “At one point it was

with one hand and then two hands.” Id. at 132-33.

[7] Also, on cross-examination, K.B. stated that she did not know what Castro’s penis looked

like because she did not look, and her eyes were closed. Id. at 133. Defense counsel asked K.B.

if she had touched Castro’s penis for an hour, and K.B. explained, “I don’t think it was that long.”

Id. Defense counsel asked K.B. what color Castro’s penis was, whether it was warm or cold, and

whether she felt any hair, and K.B. responded, “I don’t know.” Id.

[8] K.B. also claimed Castro started touching her “private area.” Id. at 110-11. She said, “[H]e

told me to take my pants off and my panty, and he -- he put his hand near -- on it, and he did --

started touching it.” Id. at 110. During this testimony, K.B. clarified again that “private area”

meant “vagina.” Id. at 111. K.B. said Castro stopped touching her when a car drove into the

parking lot and a family got out. Id. at 133-34. Then Castro drove them back to the house. Id. at

134.

[9] The second instance of CSC happened sometime in 2019, after the incident at the beach,

and took place in a bedroom at K.B.’s family home. Id. at 112. While K.B. was playing in her

bedroom with her sisters, Castro entered the room and told the two younger girls to go outside so People v. Castro, 2025 Guam 9, Opinion Page 5 of 32

he could speak with K.B. Id. at 112-13. Then Castro closed the door and told K.B. to sit on the

floor “against the door.” Id. at 113. K.B. testified:

A And he told me to take my pants off, and he told me to take my panty off. And he -- he -- I closed my legs and he told me to open my legs, but I didn’t want to, so he opened them. He did it himself. And he went down to my area. Q What do you mean he went down to your area? What do you mean by that? A He brought his face to my private area and he started licking me. Q What do you mean by licking you? A Like, licking my area.

Id. The People asked K.B. for a second time what she meant by “he licked my area”:

A Like, he started licking me towards my private part and (heavy sigh) -- I’m not sure how to explain it. Q Was he licking your private part? A Yes. Q And do you have any -- how long that went on? A No.

Id. at 114-15. K.B. further testified that Castro told her to put her clothes back on, and then Castro

exited the room. Id. at 113-14. K.B. explained that Castro told her not to say anything to anyone

or that they would both get in trouble. Id. at 115.

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