A Scotland Yard undercover detective is on the trail of a saboteur who is part of a plot to set off a bomb in London. But when the detective's cover is blown, the plot begins to unravel.
|Sylvia Sidney||Oskar Homolka|
|Desmond Tester||John Loder|
|Joyce Barbour||Matthew Boulton|
|S.J. Warmington||William Dewhurst|
|25||25 Greatest Films of 1936|