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
as Dr. Jack Griffin
Gloria Stuart
as Flora Cranley
William Harrigan
as Dr. Arthur Kemp
Henry Travers
as Dr. Cranley
Una O'Connor
as Jenny Hall
Forrester Harvey
as Herbert Hall
Holmes Herbert
as Chief of Police
E. E. Clive
as Constable Jaffers
Dudley Digges
as Chief Detective
Harry Stubbs
as Inspector Bird
Donald Stuart
as Inspector Lane
Merle Tottenham
as Millie
