'Obsessed' Man Who Helped Murder OC Family Convicted: OCDA

ORANGE COUNTY, CA — A 33-year-old Sun Valley man was convicted this week for helping carry out a plot to kill the mother and stepfather of a 17-year-old girl he became obsessed with after meeting her through the "furry" community, prosecutors said.

Frank Sato Felix, 33, was convicted Tuesday of three felony counts of first-degree murder and three felony enhancements of multiple murders in connection with the deaths of Jennifer Goodwill Yost, 39, her 34-year-old husband Christopher Yost and the couple’s friend, Arthur William Boucher, 28, according to the Orange County District Attorney’s Office.

Felix’s accomplice Joshua Charles Acosta was convicted of three counts of murder in 2018 and is serving a life sentence for the slayings, the Los Angeles Times reported.

He faces a maximum sentence of life in prison without the possibility of parole, Orange County District Attorney Todd Spitzer said.

According to Spitzer, the teen was introduced by her mother to the "furry" community — a community whose members enjoy anthropomorphic animals and may dress up as the colorful characters — where she met Felix, then 25, and Acosta, a 21-year-old Army mechanic.

Felix became romantically involved with the teen, while her mother and stepfather disapproved of the relationship.

On Sept. 24, 2016, Acosta and Felix drove to the Yosts' Fullerton home to execute their plan to help the teenager escape the home until she turned 18, Spitzer said.

After the parents and their houseguest, family friend Arthur "Billy" Boucher, went to sleep, the teenage girl went into the truck with Felix while Acosta went inside.

Acosta then shot the 28-year-old Boucher in the head as he was asleep on the living room couch.

Acosta then went into the master bedroom and shot the 17-year-old’s mother in the face. The girl’s stepfather attempted to escape but was shot in the head as he tried to get out to the outside patio area.

Acosta fled the home, leaving the Yosts’ six-year-old and nine-year-old daughters alone in the home with the bodies of their parents and their friend, while he escaped with the teenager and Felix to Felix’s home in Sun Valley.

After arriving, they burned their clothes and attempted to destroy their cell phones.

The Yosts’ six-year-old and nine-year-old daughters woke up to find their parents dead along with their friend and called 911.

Fullerton Police Department detectives arrested Felix at his Sun Valley home. Acosta was arrested at his barracks at Fort Irwin.

"Two little girls, six and nine, went to sleep not knowing the last time they would see their parents would be when they woke up to find them shot to death," said Orange County District Attorney Todd Spitzer. "The trauma inflicted on those little girls compounded by the loss both of their parents in such a violent way is beyond heartbreaking. Violence is never the answer, and a sick and twisted plan turned into life behind bars for two young men."