Horatio 'Boston Blackie' Black

Chester Morris

Constance Gloria Mannard

Lynn Merrick

Steven Cubaker

George Meader

Mr. Obie

Jack Rice

Alexander Harmon

Douglas Wood

Leslie Paisley

Dan Stowell

Insp. John Farraday

Richard Lane

Sgt. Matthews

Frank Sully

Jack Higgins

Steve Cochran

The Runt

George E. Stone

Arthur Manleder

Lloyd Corrigan

Wilfred Kittridge

George M. Carleton

Doctor

Edward Keane

Diz

George Lloyd

Director

Arthur Dreifuss

Producer

Michael Kraike

Editor

Richard Fantl

Director of Photography

George Meehan

Story

Paul Yawitz

Writer

Jack Boyle

Screenplay

Ben Markson