Working in Dr. Cranley's laboratory, scientist Jack Griffin was always given the latitude to conduct some of his own experiments. His sudden departure, however, has Cranley's daughter Flora worried about him. Griffin has taken a room at the nearby Lion's Head Inn, hoping to reverse an experiment he conducted on himself that made him invisible. But the experimental drug has also warped his mind, making him aggressive and dangerous. He's prepared to do whatever it takes to restore his appearance.
as Dr. Jack Griffin
as Flora Cranley
as Dr. Arthur Kemp
as Dr. Cranley
as Jenny Hall
as Herbert Hall
as Chief of Police
as Constable Jaffers
as Chief Detective
as Inspector Bird
as Inspector Lane
as Millie
as Detective Thompson (uncredited)
as Radio Announcer (uncredited)
as Villager Playing Darts (uncredited)
as Bicycle Owner (uncredited)
as Farmer (uncredited)
as Mary Purdy (uncredited)
as Townswoman at Pub (uncredited)
as Informer Suggesting Ink (uncredited)
as Villager (uncredited)
as Officer in Charge of Barn Capture (uncredited)
as Reporter (uncredited)
as Screaming Woman (uncredited)
as Townsman at Pub (uncredited)
as Constable (uncredited)
as Townswoman at Pub (uncredited)
as Woman (uncredited)
as Doctor (uncredited)
as Constable (uncredited)
as Constable (uncredited)
as Cop (uncredited)
as Constable (uncredited)
as Party Guest (uncredited)
as Detective Hogan (uncredited)
as Official (uncredited)
as Old Farmer with Barn (uncredited)
as Orphanage Worker (uncredited)
as Old Woman Listening to Radio (uncredited)
as Hospital Doctor (uncredited)
as 2nd Man Calling Police ('Frost')(uncredited)
as Railroad Switchman (uncredited)