Horatio 'Boston Blackie' Black

Chester Morris

Irene

Trudy Marshall

Dinah Moran

Constance Dowling

Inspector Farraday

Richard Lane

The Runt

George E. Stone

Sgt. Matthews

Frank Sully

John Lampau, alias John Jani

Warren Ashe

Warden Lund

Selmer Jackson

Secretary (uncredited)

Wanda Perry

Producer

Ted Richmond

Director

D. Ross Lederman

Editor

James Sweeney

Screenplay

Harry Essex

Additional Dialogue

Malcolm Stuart Boylan

Music Director

Mischa Bakaleinikoff

Characters

Jack Boyle

Art Direction

Charles Clague

Set Decoration

William F. Calvert

Director of Photography

George Meehan