In Greece during the war a small group of British commandoes and patriots land on an island with orders to attack two airfields from which the Luftwaffe is threatening allied forces in Egypt. The island is crawling with troops, and even moving by night the men soon run into trouble.
Someone knocked out a man and left him for dead during a fishing trip in Portugal. That someone is either his fetching wife, or two business partners, all sporting guilty faces after his unexpected return. Two more murders and a frame-up befall the quartet before an inspector closes the case.
An insurance investigator tumbles onto a series of similar deaths, by brain hemorrhage, of patients of a psychiatric clinic in France where therapy involves a device which can implant visual imagery in the minds of patients, ostensibly to help them relax.
A money-to-burn and girl-chasing Texas oilman, and a sensitive, dignified entomologist find themselves in charge of a brood of wild kids whose parents, both famous explorers, are reported lost while on an African safari.
A man tells his wife that the police are after him for having killed a bookie during an alcoholic binge, but that he is innocent and is being framed for the murder. The wife and her brother hide him and try to find out who the real killer was. The more they investigate, the more holes they begin to find in the husband's story.
Culver is a psychiatrist who uses hypnotism to treat his patients. When Carpenter, a test pilot, comes to see him complaining of blackouts that make his job difficult, Culver tries to mesmerise him into killing his wife.
A gang of four would-be robbers plans to steal a fortune in currency hidden aboard the "Flying Scotsman" in a railroad stateroom by cutting through the wall of the adjacent stateroom, but find themselves up against numerous unexpected drawbacks, including interference by their fellow passengers.
