
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.

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)