James Finlayson
Dr. J.H. Finlayson (uncredited)
Richard Cramer
Nick Grainger - Escaped Convict (uncredited)
Ben Turpin
Cross-Eyed Plumber
Harry Bernard
Harbor Patrol Captain
Eddie Conrad
Prof. O'Brien
Charlie Hall
Desk Clerk (uncredited)
Chester A. Bachman
Officer
Eddie Borden
Berserk Employee
Carl Faulkner
Harbor Policeman
Jack Hill
Man Beneath Auto
Claire James
Receptionist at horn factory
Walter Lawrence
Pedestrian
Sam Lufkin
Horn Factory Workman
Robert McKenzie
Capt. McKenzie
Patsy Moran
Switchboard Operator
Jack Perrin
2nd Police Officer
Constantine Romanoff
Horn Factory Workman
Francesca Santoro
Girl with Doll