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.
Edmund Gwenn
Barry MacKay
Aileen Marson
D.A. Clarke-Smith
Viola Lyel
Wally Patch
John Turnbull
Barbara Everest
Beatrice Marsden
Philip Hewland
Barry O'Neill