the killer's hockey mask comes off, revealing that he is Roy Burns, one of the paramedics who arrived at the scene of Joey's murder. The police later identify Roy as Joey's father and determine that he went insane after his son's death and sought revenge inspired by the stories of Jason's killing sprees. While recovering in the hospital, Tommy has another hallucination of Jason, but he faces his fears and makes him disappear. He then hears Pam approaching and smashes the window to appear as though he has escaped. When Pam rushes in, Tommy appears from behind the door wearing Roy's hockey mask and wielding a kitchen knife. Cast John Hock appeared as Jason Voorhees in the opening dream sequence because Morga was unavailable when the scene was shot. He also performed the stunt where Roy fell off the barn. Production Casting Friday the 13th: A New Beginning was cast under a fake title, Repetition, and many of the actors in the film were not aware it was a Friday the 13th installment until after they were cast in their roles. Among the unaware cast was lead actor John Shepherd, who spent several months volunteering at a state mental hospital to prepare for the role, and that he felt "really disappointed" to discover that Repetition was actually the fifth entry in the Friday the 13th series. Actor Dick Wieand stated, "It wasn't until I saw Part V that I realized what a piece of trash it was. I mean, I knew the series' reputation, but you're always hoping that yours is going to come out better", and director Danny Steinmann stated that he "shot a fucking porno in the woods there. You wouldn't believe the nudity they cut out." Corey Feldman was only able to make a cameo appearance in the film as a result of his involvement as an actor in The Goonies, which was released the same year as A New Beginning. Feldman filmed the inserts of his cameo on a Sunday, as that was his off day of shooting his other film, and the footage was shot in the backyard of his family's home in Los Angeles with a rain machine. The film is the only entry in the Friday the 13th film series to feature a hockey mask design with two blue triangles pointing downward, as opposed to the more common variant of three red triangles,