The Invisible Menace

Boris Karloff

Jevries

Marie Wilson

Sally

Eddie Craven

Eddie Pratt

Regis Toomey

Lt. Matthews

Henry Kolker

Col. Hackett

Cy Kendall

Colonel Rogers

Charles Trowbridge

Dr. Brooks

Eddie Acuff

Corporal Sanger

Frank Faylen

Private of the Guard

Phyllis Barry

Aline Dolman

Harland Tucker

Reilly

William Haade

Pvt. Ferris