A seemingly model citizen living in mid-century London, John Christie (Richard Attenborough) is actually a killer. Masquerading as a doctor, he convinces guileless women that he can cure whatever might ail them, and when they follow him to his home, he chokes them to death and buries them in a makeshift graveyard. Based on a series of real-life killings, the story follows John as he cons a pregnant bride (Judy Geeson) and wonders if he might have found a scapegoat in her husband (John Hurt).