Paul Kelly as 'Scoop' Hanlon

Constance Moore as Stephanie Kirkland

William Lundigan as Larry Dearden

Edwin Stanley as Dr. Carroll

Selmer Jackson as Frank Baldrich

Billy Wayne as 'Vic'

George Cooper as 'Jake'

P.J. Kelly as Edwards - the Butler

Florence Wix as Linda Baldrich

Harlan Briggs as Frank Kendall - Editor

Pat C. Flick as Nikolaus Popoulos - Inventor

Thomas Carr as Minor Role

Myrtis Crinley as Minor Role

Allen Fox as Minor Role

John Harmon as Baldrich's Guard

George Ovey as Gatekeeper

Raymond Parker as Wolf

Michael Slade as Brown - Kendall's Assistant (uncredited)

Leonard Sues as Office Boy

Guy Usher as Police Inspector McDonald

Margo Yoder as Maid