Cedric Hardwicke
Richard Cobb
The owner of a coal mining operation, falsely imprisoned for fratricide, takes a drug to make him invisible, despite its side effect: gradual madness.
Richard Cobb
Geoffrey Radcliffe
Helen Manson
Dr. Frank Griffin
Inspector Sampson
Willie Spears
Ben Jenkins
Minor Role (uncredited)
Plainclothesman (uncredited)
Fight Spectator (uncredited)
Jim (uncredited)
Woman (uncredited)
Minor Role (uncredited)
Policeman (uncredited)
Policeman (uncredited)
Miner at Colliery (uncredited)
Griffin's Secretary (uncredited)
Minor Role (uncredited)
Minor Role (uncredited)
Miner at Colliery (uncredited)
Director
