Robert Douglas Director Leslie Nielsen Alan Holiday Actor Aliza Gur Catherine Carrel Actor Dorinda Stevens Olive Davies Actor Eric Pohlmann Krogh Actor Edina Ronay Julie Actor Cyril Raymond Insp. Fleming Actor Stanley Morgan Plainclothesman Actor Jenny White Vernay's Model Actor Jack Melford PC Inspector Actor Hugh Latimer Jules Lemoine Actor Simon Oates Saunders Actor George Little Train porter Actor John Quayle Jackson Actor Trevor Reid Policeman on train Actor John Busby Bearman Actor Robert L. Lippert Producer Jack Parsons Producer Harry Spalding Writer