The Sex Thief is a 1973 British sex comedy film starring David Warbeck, Diane Keen and Christopher Biggins. It was an early film credit for director Martin Campbell.

Plot

Grant Henry (David Warbeck), a writer of trashy paperbacks like The Dirty and the Dying, moonlights as a masked jewel thief who is usually caught in the act but is able to get away with his crimes by luring his female victims to bed. After these women lie to the police about the thief's identity ("who could disguise himself as a clubfooted coloured midget one week and a 6′6″ Russian with a harelip the next") and seem to want to get burgled again, the Inspector in charge of the case (Terence Edmond) and an insurance investigator trained in kung fu (Diane Keen) decide to lay a trap for the thief.