Horatio 'Boston Blackie' Black

Chester Morris

Sally Brown

Nina Foch

Dr. Fagle

Phil Van Zandt

Patricia Powers

Adele Roberts

Jimmy Casey

Steve Cochran

Inspector Farraday

Richard Lane

The Runt

George E. Stone

Mathews

Frank Sully

Martha

Iris Adrian

Arthur Manleder

Harry Hayden

Steve Caveroni

Joe Devlin

Hotel clerk

Dan Stowell

Director

Arthur Dreifuss

Writer

Edward Dein

Story

Fred Schiller

Producer

Alexis Thurn-Taxis

Editor

Aaron Stell

Characters

Jack Boyle

Director of Photography

George Meehan

Set Decoration

Fay Babcock

Art Direction

Perry Smith