For the ventriloquist Gabbo his wooden dummy Otto is the only means of expression. When he starts relying more and more on Otto, he starts going mad.
Gabbo
Mary
Frank
Babe
Orchestra Leader
Otto (voice) (uncredited)
Dancer (uncredited)
Dancer (uncredited)
Vaudevillian (uncredited)
Director
Producer
Story
Sound Supervisor
Special Effects Assistant
Executive Producer
Executive Producer
Production Manager
Assistant Art Director
Art Direction
Costume Design
Dialogue
Director of Photography
Director