A professor of astronomy helping on a missile development program. An old friend of his is a Russian chess champion. The Russian is working with shady businessman Marek and they plan to kidnap the professor and make it look as though he has defected to the Soviet Union.

Sebastian is an undisciplined mathematics genius who works in the "cipher bureau" of the British Intelligence. While cracking enemy codes, Sebastian finds time to romance co-worker Rebecca Howard.

A wily old codger matches wits with the King of the Leprechauns and helps play matchmaker for his daughter and the strapping lad who has replaced him as caretaker.

An English professor decides that there are too many useless people in the world and invents a gas that will kill them off. But first they'll at least have a good laugh.

A pretty young woman will do anything to escape her deadly dull existence in the backlots of Wales. But when she reaches the bright lights of London is the price too high?

After being shipwrecked, the Robinson family is marooned on an island inhabited only by an impressive array of wildlife. In true pioneer spirit, they quickly make themselves at home but soon face a danger even greater than nature: dastardly pirates.