A young artist plots "the perfect murder" in order to inherit his wealthy uncle's fortune.

Long after being deserted by her husband, Linda Harrison will soon be free to marry her lover, Michael Carteret. But when her husband suddenly reappears, he attempts to blackmail the couple with a threat of ruining Michael's career. When her husband is murdered, Michael appears to be the only obvious suspect - but will the circumstantial evidence be enough to sentence him to death?

When her husband is wrongly accused of murder, an opera singer sets out to find the real culprit.

Two businessmen have the shock of their lives when a woman appears out of their past bearing a 23 year old son - and one of them may be the father!

Small-time jewel thief Leo Martin is deserted by his partners-in-crime, club owner Gus Loman and driver Hatchett, when the robbery they are committing goes wrong. After serving his prison sentence, Leo emerges with an intricate plan for revenge. Leo implicates Loman, as well as his amoral boss, Gregory Lang, for murder -- but Inspector Rogers suspects Leo.

A husband-and-wife detective team look into the murder of one of her friends, whose father--a prominent scientist--has been kidnapped. They find themselves up against a sinister crime organization headed by a mysterious figure known only as "Z".