
The film stars Edmund Gwenn, who plays a chemist, whose son Lawrence (played by Barry MacKay) is attacked on a train. He appears to have shot the man.
Director:

Edmund Gwenn
David Lawrence

Barry MacKay
Jim Lawrence

Aileen Marson
Mary Willett

D.A. Clarke-Smith
Stranger

Viola Lyel
Mrs. Willett

Wally Patch
Sergeant

John Turnbull
Inspector Goodall

Barbara Everest
Mrs. Lawrence

Beatrice Marsden
Mrs. Smith

Philip Hewland
Minor Role

Barry O'Neill
Minor Role