Synopsis

The owner of a coal mining operation, falsely imprisoned for fratricide, takes a drug to make him invisible, despite its side effect: gradual madness.

Cast

Cedric Hardwicke

Richard Cobb

Vincent Price

Geoffrey Radcliffe

Nan Grey

Helen Manson

John Sutton

Dr. Frank Griffin

Cecil Kellaway

Inspector Sampson

Alan Napier

Willie Spears

Forrester Harvey

Ben Jenkins

Ernie Adams

Minor Role (uncredited)

Jimmy Aubrey

Plainclothesman (uncredited)

No photo

Walter Bacon

Fight Spectator (uncredited)

Billy Bevan

Jim (uncredited)

No photo

Clara Blore

Woman (uncredited)

Stanley Blystone

Minor Role (uncredited)

Matthew Boulton

Policeman (uncredited)

Ed Brady

Policeman (uncredited)

Chet Brandenburg

Miner at Colliery (uncredited)

Louise Brien

Griffin's Secretary (uncredited)

Charles Brokaw

Minor Role (uncredited)

Jean Brooks

Minor Role (uncredited)

No photo

Tom Coleman

Miner at Colliery (uncredited)

No photo

Frank Coletti

Minor Role (uncredited)

Harry Cording

Miner (uncredited)

No photo

Paul England

Detective (uncredited)

Rex Evans

Constable Briggs (uncredited)

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