A biker gang visits a monastery where they encounter black-robed monks engaged in worshipping Satan. When the monks try to persuade one of the female bikers, Helen, to become a satanic sacrifice the bikers smash up the monastery and leave. The monks have the last laugh, though, as Helen, as a result of the satanic rituals, is now possessed and at night changes into a werewolf, with dire results for the biker gang.
Steve Oliver
as Adam
Donna Anderson
as Helen
Gene Shane
as Tarot
Billy Gray
as Pill
Gray Johnson
as Movie
Barry MacGuire
as Scarf
Owen Orr
as Mouse
Anna Lynn Brown
as Shirley
Ingrid Grunewald
as
Marilyn Munger
as