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)

William Beaudine