Blackmail

Edward G. Robinson

John R. Ingram

Ruth Hussey

Helen Ingram

Gene Lockhart

William 'Bill' Ramey

Bobs Watson

Hank Ingram

Guinn 'Big Boy' Williams

Moose McCarthy

John Wray

Convict Diggs

Arthur Hohl

Rawlins

Esther Dale

Sarah

Trevor Bardette

Southern Deputy (uncredited)

Willie Best

Bunny - the Janitor (uncredited)

Stanley Blystone

Oil Worker (uncredited)

Wade Boteler

Police Sergeant (uncredited)

Ed Brady

Prisoner Worrying About Dick Tracy (uncredited)

Everett Brown

Black Prisoner (uncredited)

Eddy Chandler

Prisoner Boss Brown (uncredited)

George Cooper

Released Prisoner Hawley (uncredited)

Joseph Crehan

Mr. Blaine (uncredited)

Jack Daley

Policeman (uncredited)

Frank Darien

Ramey's Oil-Well Watchman (uncredited)

Hal K. Dawson

Hotel Desk Clerk (uncredited)

Joe Dominguez

Pedro (uncredited)

Harry Fleischmann

Oil Worker (uncredited)

Robert Homans

Cooper (uncredited)

Cy Kendall

Southern Sheriff (uncredited)

Victor Kilian

Warden Frank Miller (uncredited)

Ethan Laidlaw

Oil Worker (uncredited)

Robert Middlemass

Desk Sergeant (uncredited)

Charles Middleton

Southern Deputy (uncredited)

Art Miles

First Truck Driver (uncredited)

Ivan Miller

Detective Webber (uncredited)

Ed Montoya

Juan (uncredited)

Philip Morris

State Trooper (uncredited)

James C. Morton

Second Policeman Arresting John (uncredited)

Gil Perkins

Kearney - Oil Worker Blown Up (uncredited)

Bob Reeves

Chain Gang Guard (uncredited)

Cyril Ring

Ramey's Butler (uncredited)

Harry Strang

First Policeman (uncredited)

Harry Tenbrook

Truck Driver at Gas Station (uncredited)

Leo White

Prisoner (uncredited)

Joe Whitehead

Oil Worker Anderson (uncredited)

H. C. Potter

Director

David Hertz

Screenplay

William Ludwig

Screenplay

Endre Bohem

Story

Dorothy Yost

Story

John W. Considine Jr.

Producer

Clyde De Vinna

Director of Photography

David Snell

Music

Edward Ward

Music

Howard O'Neill

Editor

Cedric Gibbons

Art Direction

Edwin B. Willis

Set Decoration