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.
- Runtime: 76 min
- Released: 11 Jan 1937
- Genre:Crime, Thriller
- Starring: Sylvia Sidney, Oskar Homolka, Desmond Tester
- Writer: Joseph Conrad, Charles Bennett, Ian Hay
- Director: Alfred Hitchcock
- Available countries: United Kingdom