King County prosecutors contend Vincent Sisounong, 21, and Blessing Gainey, 19, broke into the Northeast 133rd Street home on Oct. 12 and tortured an 18-year-old young man after pulling him from his bed. By the time the men fled, their victim had suffered bone-deep cuts to his legs, shoulder and head and was losing large amounts of blood.
At large following the killings, both men were arrested in late October. Both have since been charged with attempted murder and burglary.
According to charging papers, Sisounong and Gainey admitted to the unprovoked attack on a stranger. Writing the court, Senior Deputy Prosecutor Alexandra Voorhees said Sisounong planned to kill when he and Gainey broke into the home.
"They broke into the home of complete strangers with the intent to kill," Voorhees said in court papers. Sisounong "told detectives that he wanted the victim to 'fight for his life,' and when asked if the experience was enjoyable his response was 'Yeah.'"
Gainey and Sisounong are alleged to have broken into the Kirkland home sometime before 6 a.m.
Inside, the found the teen asleep in his bedroom - the home belongs to his parents - and accosted him at knifepoint, a Kirkland detective said in court papers. The men then marched the 18-year-old into the home's garage; according to charging papers, they threatened to hurt the teen's sister and parents if he didn't cooperate.
Once in the garage, Sisounong held the teen's arms and Gainey attempted to chop off his leg, the detective said in court papers. Having sustained deep cuts to his leg, the young man broke free and set off the alarm of a car parked in the garage.
Gainey ran from the house, while Sisounong attempted to follow the injured teen into a bathroom where he'd taken shelter, the detective told the court. Sisounong partially kicked in the door, the detective continued, and attempted to stab the teen while reaching around the broken door frame.
The teen punched Sisounong in the face, prompting him to flee, the detective said in court papers. The teen, who was rapidly losing blood, woke his neighbors, who called 911.
Police arrived at the home shortly after 6 a.m. The teen was rushed to Harborview Medical Center in Seattle, where he remained hospitalized for five days.
Voorhees asserted the men appeared to motivated by "pleasure and greed."
"They broke into the home of complete strangers and tortured and stabbed a young man," Voorhees said in charging papers. "They made repeated threats to kill the victim and stabbed him in his legs, shoulder, head and hands."
Searching the home, investigators with the State Patrol crime scene response team and the King County fingerprint lab matched a fingerprint left on the teen's bedroom door to Gainey, according to charging papers. Police arrested Gainey on Oct. 24 at a Burien library.
Writing the court, the detective said Gainey admitted to slashing the teen's leg after breaking into the home. He also identified Sisounong as the other assailant.
Sisounong was arrested the following day in Auburn. According to charging papers, he admitted to the break-in and murder attempt.
"Sisounong stated that after finding (the teen) and his sister asleep in their beds on the third floor, he returned to Gainey on the second floor and stated that they had to kill them," the detective said in charging papers. "Sisounong said that Gainey agreed to participate after debating the decision for '3-5 minutes.'"
The detective noted Sisounong talked with the teen for about 30 minutes after taking him to the garage. Sisounong, the detective said, admitted he "really wanted" to kill the teen.
Neither of the accused men has a substantial criminal history. Both have been charged with attempted first-degree murder and first-degree burglary, and remain jailed.