After experimenting on himself and becoming invisible, scientist Jack Griffin, now aggressive due to the drug's effects, seeks a way to reverse the experiment at any cost.
Claude Rains
Dr. Jack Griffin
Gloria Stuart
Flora Cranley
William Harrigan
Dr. Arthur Kemp
Henry Travers
Dr. Cranley
Una O'Connor
Jenny Hall
Forrester Harvey
Herbert Hall
Holmes Herbert
Chief of Police
E. E. Clive
Constable Jaffers
