Smashing the Spy Ring

Warren Hull

Phil Dunlap

Forbes Murray

Colonel Scully

John Tyrrell

Johnson

Paul Whitney

Mason

May Wallace

Mrs. Baxter

Lorna Gray

Nurse Anna Loring

Dick Curtis

Williams (uncredited)

Bess Flowers

Mrs. Austin (uncredited)

Byron Foulger

Schuster aka Quirk (uncredited)

Bob Walker

Workman (uncredited)

George Turner

Spy Henchman

Rose Allen

Madelon's Maid (uncredited)

Sam Ash

Doctor (uncredited)

Trevor Bardette

Jordan (uncredited)

Mike Blair

Radio Commentator (uncredited)

Don Brodie

Casey (uncredited)

Ralph Brooks

Operator (uncredited)

Stanley Brown

Vendor (uncredited)

Morgan Conway

Professor Leonard (uncredited)