Sidney Blackmer
Police Commissioner Thatcher Colt

Rick Vallin
Anthony 'Tony' Abbot (as Ricki Vallin)

Byron Foulger
Everett P. Digberry

Herbert Rawlinson
District Attorney Bill Dougherty

Lynn Starr
Miss Spencer

Barry Bernard
Capt. Edgar Walters / Frank Galloway

Trude Rosen
Nina Politza

Thornton Edwards
Enrico Lombardi

John Ince
Police Captain Mike Flynn

Martin Ashe
Officer Murphy

Walter James
Police Captain Tom Henry

Frank Darien
Samuel Wilkins

Joseph DeVillard
Antonio Spogucci (as Joseph M. De Villard)

Jacques Vanaire
Guiseppe Bartarelli (as Jack Vanaire)

Willy Castello
John Martin George (as William Castello)

Harry Clark
Officer Lou Levinsky (as Harry Clarke)

Lew Leroy
Apartment Manager (as Lou LeRoy)

Billy Mitchell
Nicodemus J. Brown

Florence O'Brien
Petunia

Harte Wayne
Coroner