Guinn "Big Boy" Williams as Dick Mallory

Allene Ray as Ruth Hampton

Niles Welch as Sam Crandall

Tom O'Brien as Police Sgt. Pat Collins

Sheldon Lewis as The Thing

Wilfred Lucas as Dist. Atty. John Hampton

Violet Knights as Lucy - the Maid

William Gould as Dr. Weldon

Bobby Dunn as Shorty - the Chauffeur

William Jackie as Oscar - the Lunatic