Richard Widmark as Harry Fabian

Francis L. Sullivan as Philip Nosseross

Gene Tierney as Mary Bristol

Googie Withers as Helen Nosseross

Stanislaus Zbyszko as Gregorius

Herbert Lom as Kristo

Hugh Marlowe as Adam Dunn

Mike Mazurki as The Strangler

Charles Farrell as Mickey Beer

Ada Reeve as Molly

Ken Richmond as Nikolas

Alan Tilvern as Beggar (uncredited)

Derek Blomfield as Young Policeman (uncredited)

Clifford Buckton as Policeman (uncredited)

Ernest Butcher as Bert, Street Musician (uncredited)

Peter Butterworth as Thug (uncredited)

Naomi Chance as Nightclub Hostess (uncredited)

Edward Chapman as Hoskins (uncredited)

Clifford Cobbe as Policeman (uncredited)

Patricia Davidson as Nightclub Hostess (uncredited)

Maureen Delaney as Anna O'Leary (uncredited)

Aubrey Dexter as Fergus Chilk (uncredited)

Stanley Escane as Man (uncredited)

Thomas Gallagher as Bagrag, Bar Owner (uncredited)

Rex Garner as Waiter (uncredited)

James Hayter as Figler (uncredited)

George Hirste as Beggar (uncredited)

Hamilton Keene as Charles, American Bartender (uncredited)

Kay Kendall as Helen's Girl (uncredited)

Hubert Leslie as Nightwatchman (uncredited)

Arthur Lovegrove as Thug (uncredited)

Jack Mandeville as Man in Alley (uncredited)

John Mann as Beggar (uncredited)

Lew Marco as Referee (uncredited)

Gibb McLaughlin as Googin (uncredited)

MacDonald Parke as American from Chicago (uncredited)

Frank Pettitt as Cab Driver (uncredited)

Charles Paton as Watchman (uncredited)

Chunky Pattison as Dwarf (uncredited)

Philip Ray as Man (uncredited)

Eddy Reed as American from Chicago (uncredited)

John Rudling as Man (uncredited)

Harold Sanderson as Man at Wrestling Match (uncredited)

Johnnie Schofield as Cashier (uncredited)

Betty Shale as Mrs. Pinkney (uncredited)

John Sharp as Man (uncredited)

Leonard Sharp as Beggar (uncredited)

Ray St. Bernard as The Strangler's Opponent (uncredited)

Tony Sympson as Cozen (uncredited)

Harry Terry as Man on Dock (uncredited)

C. Denier Warren as American from Chicago (uncredited)

Freddie Watts as Man (uncredited)

Brian Weske as Messenger Boy (uncredited)

Russell Westwood as Yosh (uncredited)