Gene, a clever but seriously deranged computer-game designer, has been left by his wife Eva. Unable to win her back, he decides to take revenge by locking Eva in her new apartment, inside which he has released a deadly mamba snake.
Five people receive an anonymous letter revealing a secret of theirs and inviting them to come stay at a mansion that houses a clinic run by a corrupt doctor who experiments on the brain of his comatose son.
Legendary Swedish sex bomb Anita Ekberg stars as Sister Gertrude, a cruel nun who discovers depraved pleasure in a frenzy of drug addiction, sexual degradation and sadistic murder.