Verloc is to plant a bomb, however the police in the form of undercover detective Ted (John Loder) - who makes a rather unconvincing grocer - is already watching the cinema and onto existence of a plot (not that they know what it is). Verloc's wife (Sylvia Sidney) and her young brother Stevie (Desmond Tester) are unaware that kindly Mr Verloc is really a terrorist though when Ted's cover is blown it is too late for the tragedy which engulfs both of them...
Tense and atmospheric, this film delivers and also is a wonderful look at 1930s London: tubes, trams and pavements of street vendors selling nonsense. Look out for a young Charles Hawtrey in a cameo talking about turtles!
