Voice of the Whistler

Egon Brecher

Dr. Rose (replaced by Frank Reicher) (uncredited)

Charles Coleman

Sinclair's Butler (uncredited)

Otto Forrest

The Whistler (uncredited)

Byron Foulger

Georgie (uncredited)

Martín Garralaga

Tony, Fruit Peddler (uncredited)

John Hamilton

Doctor (uncredited)

Stuart Holmes

Sinclair Executive (uncredited)

Wilbur Mack

Sinclair Executive (uncredited)

Charles Marsh

Sinclair Executive (uncredited)

Harold Miller

Sinclair Executive (uncredited)

Forbes Murray

Sinclair Executive (uncredited)

Gigi Perreau

Bobbie (uncredited)

Frank Reicher

Dr. Rose (uncredited)

Clinton Rosemond

Train Porter (uncredited)