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A woman recovering from a nervous breakdown tries to convince her husband and and the local London police that she has witnessed a murder in the abandoned house next door.

A detective accidentally kills a man and disposes of the body to protect his career. The next day he sees that someone has hanged the corpse from a crane for all to see. He takes charge of the murder investigation to protect himself and find out who did it.

Jessica and her fiancé Evan have just moved from the city into their dream home on a quiet suburban street. Soon after, Jessica catches her seemingly friendly new neighbor, Simon, in a strange lie and can't let her suspicions rest. The danger escalates when Simon lures her inside his home and imprisons Jessica in his secret bunker, meticulously decorated in the idealized style of the 1950s.

Charles Dobbs is a British secret agent investigating the apparent suicide of Foreign Office official Samuel Fennan. Dobbs suspects that Fennan's wife, Elsa, a survivor of a Nazi Germany extermination camp, might have some clues, but other officials want Dobbs to drop the case. So Dobbs hires a retiring inspector, Mendel, to quietly make inquiries. Dobbs isn't at all sure as there are a number of anomalies that simply can't be explained away. Dobbs is also having trouble at home with his errant wife, whom he very much loves, having frequent affairs. He's also pleased to see an old friend, Dieter Frey, who he recruited after the war. With the assistance of a colleague and a retired policeman, Dobbs tries to piece together just who is the spy and who in fact assassinated Fennan.