Characters played by Warren William
Michael Lanyard
Characters played by Eric Blore
Jamison
Characters played by Hillary Brooke
Pamela Hart
Characters played by Thurston Hall
Inspector Crane
Characters played by Fred Kelsey
Detective Wesley Dickens
Characters played by Forrest Tucker
Anton Schugg
Characters played by Matthew Boulton
Inspector J. Stephens
Characters played by Kurt Katch
Gustav Soessel
Characters played by Morton Lowry
Kurt Weil aka Kent Wells
Characters played by Leslie Denison
Harvey Leeds
Characters played by Billy Bevan
George Barrow
Characters played by Stanley Logan
Sir Stafford Hart
Characters played by Tom Stevenson
Police Sergeant Hopkins