British crime film directed by Peter Duffell and starring Bernard Lee, Moira Redmond and John Van Eyssen, loosely based on the 1918 novel "The Man Who Knew" by Edgar Wallace.

A young girl is framed for a robbery and sent to a harsh reform school, where she becomes the target of a vicious warden.

A wristwatch-smuggling gang bring watches into the country in a car's petrol tank. Poor Zena Marshall knows too much, so the gangs abducts her. Stalwart customs official Anthony Steel struggles manfully to rescue the girl.

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.

Soon after celebrating his engagement to aristocratic heiress Kathy Riddle (Carol Marsh), engineer Bob Jensen (Ronald Howard) is accused by an insurance investigator of being a notorious -- and murderous -- jewel thief. Can Bob restore his reputation and regain Kathy's trust? Desperate to prove his innocence, Bob engineers a daring jailbreak and pursues the real culprit. Montgomery Tully directs this crime drama.

Betty, a young and pretty widow, is seriously concerned about her young son Jimmy who, since his father's death, has become very difficult for her to control. He has been associating with a gang of very rough youths, the ring-leader of whom is a young tough called Tommy. One day Betty discovers some money hidden under her dustbin...

The daughter of a textile company owner falls in love with a young illustrator with a secret criminal past.