The College Girl Murders (1967)
Police try to track down a hooded serial killer who murders his victims with a combination of acid and poison gas
Der Gorilla von Soho (1968)
Scotland Yard goes after a gang that drowns its victims for their insurance money
Seven BloodStained Orchids (1972)
A woman, a survivor of a failed murder attempt by a person dubbed The Half Moon Killer by the police, and her husband must find the connecting thread between herself, six other women, and the killer before the killer strikes at her
Angels of Terror (1971)
An Australian woman arrives in London to search for her sister who she finds is involved with a heroin smuggling gang The gang itself is under attack from an unknown rival, who is methodically assassinating them with a shot to the h