David Wayne as Martin W. Harrow

Howard Da Silva as Inspector Carney

Martin Gabel as Charlie Marshall

Luther Adler as Dan Langley

Steve Brodie as Police Lt. Becker

Raymond Burr as Pottsy

Glenn Anders as Riggert

Norman Lloyd as Sutro

Walter Burke as MacMahan

John Miljan as Blind Baloon Vendor

Roy Engel as Police Chief Regan

Janine Perreau as The Last Little Girl

Leonard Bremen as Lemke (as Lennie Bremen)

Benny Burt as Jansen

Bernard Szold as Bradbury Bldg. Watchman

Robin Fletcher as Elsie Coster

Karen Morley as Mrs. Coster

Jim Backus as The Mayor

Jorja Curtright as Mrs. Stewart

Frances Karath as Little Girl in Hallway

Abdullah Abbas as Man in Mob (uncredited)

Fred Aldrich as Sam (uncredited)

Don Anderson as Speakeasy Patron (uncredited)

Al Bain as Man in Mob (uncredited)

Benjie Bancroft as Cab Driver (uncredited)

George Barrows as Policeman (uncredited)

Ivan Bell as Man in Mob (uncredited)

Madge Blake as Police Station Witness (uncredited)

Willie Bloom as Man in Mob (uncredited)

Ewing Miles Brown as Minor Role (uncredited)

Boyd Cabeen as Hood (uncredited)

James J. Casino as Man in Mob (uncredited)

Michael Cirillo as Bartender (uncredited)

Bing Conley as Bartender (uncredited)

Jane Crowley as Woman in Mob (uncredited)

Russell Custer as Policeman (uncredited)

Bill Welsh as Dr. Graham (uncredited)