William Sylvester as Layton / Steve Ross

Mai Zetterling as Ruth Lombard

John Meillon as Johnny Hemick

Anthony Dawson as James Dawson

Neil McCarthy as Leo Farrell

Joseph Fürst as Paul Varna

Harry Baird as Gill Hall

John Phillips as Chief Superintendent Gault

Victor Brooks as Inspector Adams

Diana King as Maggie Dawson

Gerard Heinz as Jake

Nan Munro as Sarah Bennett

Ronald Adam as J. B. Wykeham

Neil Wilson as Pat Ryan

Sidney Vivian as Sam French

William Sherwood as Bank Manager

Andrew Laurence as Bank Clerk

Patricia Shakesby as Typist

Anthony Baird as City Constable

Tom Clegg as Dropkick

Meadows White as Mortuary Attendant

Fred McNaughton as Police Superintendent