Unintentionally funny British horror film starring American beach-party star Frankie Avalon as a London youth who gets wrapped up in an adventure that leads him and his dope-smoking friends into a dangerous haunted house. There the wayward youths try to conjure up dead spirits by holding a
seance, but their efforts fail. The group decides to split up and explore the house, and before you know it, one of their number turns up murdered. Wondering whether a demon did the deed or perhaps even one of their drug-crazed friends, the gang members hide the corpse, leave the house, and stay
mum about the whole thing. Soon the cops are poking around asking questions, and Aval...