On screen
Cast
12 credited performers
Russell Hopton
Det. Lt. Ted Mallory
Lola Lane
Kay Palmer
George F. Marion
Jim Gray
John St. Polis
Prof. Trowbridge
Lee Kohlmar
Prof. Ernst Einfeld
Lew Kelly
Det. Regan
E.H. Calvert
District Attorney
Wheeler Oakman
Character not listed
Artwork unavailable
Robert Frazier
Character not listed
Cornelius Keefe
Character not listed
John Davidson
Character not listed
John Dilson
Character not listed