Overview
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.

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.

Dr. Jack Griffin

Flora Cranley

Dr. Arthur Kemp

Dr. Cranley

Jenny Hall

Herbert Hall

Chief of Police

Constable Jaffers

Chief Detective

Inspector Bird

Inspector Lane

Millie

Detective Thompson (uncredited)

Radio Announcer (uncredited)

Villager Playing Darts (uncredited)

Bicycle Owner (uncredited)

Farmer (uncredited)
Mary Purdy (uncredited)

Townswoman at Pub (uncredited)

Informer Suggesting Ink (uncredited)

Villager (uncredited)
Officer in Charge of Barn Capture (uncredited)

Reporter (uncredited)

Screaming Woman (uncredited)
Townsman at Pub (uncredited)
Constable (uncredited)
Townswoman at Pub (uncredited)

Woman (uncredited)

Doctor (uncredited)

Constable (uncredited)

Constable (uncredited)

Cop (uncredited)
Constable (uncredited)

Party Guest (uncredited)

Detective Hogan (uncredited)

Official (uncredited)

Old Farmer with Barn (uncredited)

Orphanage Worker (uncredited)
Old Woman Listening to Radio (uncredited)

Hospital Doctor (uncredited)

2nd Man Calling Police ('Frost')(uncredited)
Railroad Switchman (uncredited)

































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