An unemployed Brit vents his rage on unsuspecting strangers as he embarks on a nocturnal London odyssey.
A group of potential heirs gather in a forbidding old house to learn which of them will inherit a fortune. Later, they learn that a flesh-rending maniac is loose.
After finding her boss, a private detective, has committed suicide and has left her his agency, Cordelia Gray is asked to investigate the suicide of the man's son. During the course of her investigation, Cordelia becomes obsessed with the young man's memory and his increasingly suspicious death.
