Mystery Of Missing Vampire Teen — As Parents Found Dead

Police in Fullerton, Calif., are piecing together the bizarre murder of a couple and their friend by two men — with police first saying they had found the couple's 17-year-old daughter, and then announcing that an unnamed girl of the same age had been arrested for the murder!

Alarmed friends of the family are waiting for more news, but the daughter — Katlynn Goodwill Yost (pictured) — is already confirmed to be friends with one of the accused murders.

In a further strange twist, Katlynn enjoyed dressing as a vampire and posing with knives, She's also a proud Furry, meaning a person who gets gratification from dressing up like a cartoon animal!

Katlynn (seen here in costume) had been advertising in the Furry community for a handler. That would be someone willing to treat her like a pet, although Katlynn declared: "I don't like leashes, so you better follow me if I wander off."

Katlynn (seen here in costume) had been advertising in the Furry community for a handler. That would be someone willing to treat her like a pet, although Katlynn declared: "I don't like leashes, so you better follow me if I wander off."

Frank Felix, 25, and 21-year-old Josh Acosta (at right) have been arrested for the murder of Christopher Yost and his wife Jennifer Goodwill Yost — and the murder of their friend Arthur William Boucher. Jennifer, who made and sold custom voodoo dolls and plush toys, was also involved in the Furry community.

Police originally said that Katlynn was missing from the crime scene, but announced that she had been found while also revealing that Acosta and Felix had been arrested. Katlynn's sisters — ages 6 and 9 — were found at the homicide scene, but had been left unharmed.

Sgt. Jon Radus confirmed that the victims in the house knew their killers. (This photo from Katlynn's Twitter account shows a man described as her "bestie" who resembles Felix.) In a statement, the police department said: "Katlynn Goodwill Yost has been located, unharmed. State law prevents law enforcement from releasing the names of juveniles who have been arrested for crimes. A 17-year-old female juvenile has also been detained for the murders and is in custody at the Orange County Juvenile Hall."

Felix recently made this image as his icon for his Facebook page. According to members of the local Furry community, Katlynn and Frank Felix had been dating, but her mother did not approve. Said one local: "I hope this isn't what I think it is."