An American with a shady past joins with a morally-bankrupt Irishman to find treasure buried by Arabs in a deserted mosque in the Sahara. The situation becomes complicated when they are surrounded by Bedouin bandits.

A British commando is on a one-man raid to destroy a bomb factory in Nazi-occupied France. He must enlist the aid of French farmers to complete his mission.

Diabolical French capitalist Paul Reynard is forced to leave Irene, his bride of one year, when he is arrested for the crimes of forgery and embezzlement and sentenced to a penal colony off the coast of South America.

After the war, Matt Gordon returns to Singapore to retrieve a fortune in smuggled pearls. Arrived, he reminisces in flashback about his prewar fiancée, alluring Linda, and her disappearance during the Japanese attack. But now Linda resurfaces...with amnesia and married to rich planter Van Leyden. Meanwhile, sinister fence Mauribus schemes to get Matt's pearls.

In Victorian era London, the inhabitants of a family home with rented rooms upstairs fear the new lodger is Jack the Ripper.

George Harvey Bone is a composer in early 20th century London, who is under stress because he is writing a piano concerto. Due to this stress, he gets black outs when ever he hears dissonances. When he finds himself after the black out in a different quarter of the town, he returns home, to read in the paper that somebody in that quarter was murdered. Asking help from a doctor at Scotland Yard he is assured that he has nothing to do with it, but he is advised to cut back in his work and get some relaxation like other, ordinary people. At a cheap musical he meets Netta, a singer, who inspires him for a new motive for his concerto. But Netta discovers that this motive could also be used as a song for her. The song gets sold, and she hangs around George to get more songs out of him. George believes that Netta is in love with him, and gets in an argument with his girlfriend Barbara, the daughter of Lord Henry, who wants the concerto for one of his souares. George has another black out, ...