State Of Washington, V. Matthew Lee Christenson

Court of Appeals of Washington·Decided August 17, 2026·No. 87546-9·Unpublished

Opinion

IN THE COURT OF APPEALS OF THE STATE OF WASHINGTON

STATE OF WASHINGTON, No. 87546-9-I

Respondent,

DIVISION ONE

v.

UNPUBLISHED OPINION

MATTHEW LEE CHRISTENSON,

Appellant.

HAZELRIGG, C.J. — Matthew Christenson, in his third appeal in this case,

appeals from the judgment and sentence and the findings of fact and conclusions

of law for an exceptional sentence entered on resentencing. As relevant here,

following a 2017 trial, a jury convicted Christenson of one count of homicide by

abuse of O 1 (Count 1) and assault in the second degree of O by strangulation and

suffocation (Count 7). The jury found by special verdicts that the aggravating

factors of deliberate cruelty, a particularly vulnerable victim, and abuse of a

position of trust applied to both counts and both counts were crimes of domestic

violence. He now asserts that the sentence imposed on those convictions

deprived him of the right against double jeopardy, substantial and compelling

reasons did not justify the imposition of an exceptional sentence on his conviction

of homicide by abuse, and for the first time on appeal, the exceptional sentencing

1 O was eighteen years old at the time, had severe autism, was largely nonverbal, and had

the mental capacity of a toddler.

framework set out in the Sentencing Reform Act of 1981 2 deprives criminal

defendants of the constitutional right to a jury trial. Because he does not

demonstrate an entitlement to appellate relief, we affirm.

FACTS

The facts leading up to O’s death are well-known to the parties. 3 As we

described in our 2022 decision:

In 2014, [P], a special education teacher, lived in Auburn with her two sons, 13-year-old [J] and 18-year-old [O]. [O] was severely autistic and had the mental age of a toddler, requiring assistance with many daily tasks, including eating, dressing, using the toilet, and cleaning himself. He was largely unable to speak and would sometimes engage in minor self-harming behaviors including scratching and pinching himself.

On January 22, 2014, [P] posted an advertisement on Craigslist looking for a casual romantic partner. Christenson responded to her post and, after texting for about a week, they met for drinks. The next morning, [P] invited Christenson and his 20- year-old son, who were homeless at the time, to stay with her until they found their own place to live.

Christenson quickly took control over the lives of [P]’s family.

Before he moved in, [O] and [J] each had their own room while their mother slept in the apartment living room. Within two or three weeks of moving in, Christenson had moved [J] into the bathroom. . . . Christenson forced [J] to live in the bathroom without bedding of any kind and without the freedom to leave. Christenson told the mother that [J]’s confinement was necessary because the child was “possessed by evil spirits.” Shortly thereafter, Christenson also moved [O] into the bathroom, forcing him to sleep in the bathtub. [P] did not intervene because she “thought [Christenson] was trying to help us.”

Christenson, believing the family was unhealthy and overweight, also took control of the cooking and placed [O] and [J]

2 Ch. 9.94A RCW. 3 In rePers. Restraint of Christenson, No. 82309-4-I (Wash. Ct. App., May 31, 2022)

(unpublished), https://www.courts.wa.gov/opinions/pdf/823094.pdf; State v. Christenson, No. 77463-8-I (Wash. Ct. App., Aug. 12, 2019) (unpublished), https://www.courts.wa.gov/ opinions/pdf/774638.pdf. Pursuant to GR 14.1(c), we may reference unpublished opinions where necessary for a reasoned opinion. We cite to these opinions as procedural facts of the case on review and because the underlying facts from the trial court are known to the parties and undisputed on appeal.

on a strict diet. He threw away the food they had in their cupboards and severely restricted [O] and [J]’s food intake. Christenson even forced the children to eat hot peppers to regulate their bowel movements. And Christenson forced [J] and [O] to exercise for hours at a time. . . . After Christenson allowed [J] and [O] to stop exercising, he forced them to sit in ice baths, sometimes for hours.

Christenson was frequently physically violent with the children for seemingly minor reasons, such as expressing a negative opinion about the food he prepared or trying to add warm water to their bath. Christenson once hit [O] in the testicles with [O]’s favorite toy as punishment for trying to hold his mother’s hand, and his testicles became so bruised that [P] took him to the hospital. Christenson rubbed hot pepper powder into the children’s eyes. On one occasion, Christenson held [O] under water until he passed out. . . . Christenson even brought a stun gun to the home and tested it on [O].

Christenson also psychologically abused the boys. He did not allow [P] and her children to talk or look at each other or “have any kind of contact.” Christenson . . . told [P] that [O] was “smarter than what he was letting on” and just “manipulating [her] to try to take advantage so that he could be lazy.” Christenson called [O] a “nuisance” and a waste of his time. He repeatedly called the children names and told their mother that they were “ugly, worthless pieces of shit.” . . .

Despite the physical and psychological abuse, [P] never called the police, never told Christenson to stop, and never asked him to leave.

On March 5, 2014, approximately one month after Christenson moved in, [P] took [O] to see a medical professional about bruises on his testicles. Because he was nonverbal, [O] was unable to report what had happened to him. The mother told the medical staff that [O] had injured himself, later admitting this story was a lie. A few days later, [P] took [O] to the emergency room at Children’s Hospital. The doctors noted that [O] had extensive bruising and his body was covered in scratches. Again, the mother told hospital staff that [O]’s injuries were self-inflicted. But medical staff did not observe any self-injurious behavior during [O]’s hospitalization. [O] was discharged on March 20, 2014.

On March 24, 2014, [O] was admitted to the Yakima Valley School, a respite center for the developmentally disabled. [O] was again covered in extensive bruising. [P] lied to the staff and told them that the injuries occurred when [O] fell down stairs. On April 10, when she went to retrieve [O], he did not want to go with her. Scared, [O] removed his seatbelt and tried to jump out of the car as [P] was driving on the freeway.

Sometime between April 12 and April 13, 2014, [O] died. [J]

testified that on that night, he and [O] were sitting in their ice bath when Christenson and [P] came and took [O] out of the bath. They came back after 15 minutes and let [J] out of the bath, at which point he curled up on the floor and went to sleep.

The mother testified that she saw Christenson remove [O]

from the bathroom, but she went into the other bathroom to attend to their cannabis plants. When she came out into the living room an hour later, she saw [O] lying on the floor with a chair and sheet on top of his body. According to [P], [O] had a sock in his mouth and his hands and mouth were bound in duct tape. Christenson was sitting about 10 feet away, drinking and smoking. [P] further testified that she saw [O] gasp for breath, at which point she removed the chair, sheet, duct tape, and sock. She attempted CPR but, when she realized her efforts to revive [O] had been unsuccessful, washed and dressed [O] before calling 911. [P] decided to take [O] to the hospital herself rather than wait for an ambulance to arrive.

[J] testified that, in the middle of the night, Christenson pulled him out of the bathroom and told him to perform CPR on his brother who was lying motionless on the floor. [J] continued CPR on [O] as they drove to the hospital.

[O], however, had no vital signs and “no signs of life whatsoever” when they arrived at the hospital and was pronounced dead shortly after they arrived. 4

Our 2019 decision described the resulting prosecution and trial as follows:

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State Of Washington, V. Matthew Lee Christenson, (Wash. Ct. App. 2026).

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