Act Of Vengeance 1974 Genres: Serial Killer, Slasher Horror, Crime, Drama, Horror, Thriller Country: United States Director: Bob Kelljan Duration: 90 Min Year: 1974 Actors: Jo Ann Harris, Peter Brown, Jennifer Lee Pryor, Lisa Moore, Connie Strickland, Patricia Estrin, Lada Edmund Jr., Tony Young, Steve Kanaly, Ross Elliott, John Pickard, Ninette Bravo, Stanley Adams, Joan McCall, Anneka Di Lorenzo, Jay Fletcher, Marie O'Henry, Ginger Mason Storyline: A group of women take a martial arts class to punish a sadistic serial rapist who wears a hockey mask.