S. Roy Luby Director, Film Editing Bob Steele Larry O'Day Actor Harley Wood Barbara Hartwell Actor Don Barclay Lucky Smith Actor Karl Hackett Obed Young Actor Horace Murphy Sheriff Actor Miki Morita Chang Lu Actor Perry Murdock Jim Barton Actor Frank Ball Professor Andrew Hartwell Actor John S. Peters Dr. Von Kurtz Actor Fred Myton Screenwriter A.W. Hackel Producer Jack Greenhalgh Cinematographer