In this thrilling BBC adaptation of Joseph Conrad's timeless novel, Golden Globe(R) nominee Toby Jones (Detectorists) stars as Anton Verloc, an unassuming Soho shopkeeper. Unbeknownst to even his loyal wife, Winnie (Vicky McClure, Line of Duty), Verloc also works for the Russian embassy as a spy. Wishing to spur the London authorities into action against a group of local anarchists, Verloc's employers give him a mission: plant a bomb at the Greenwich Observatory to paint the anarchists as terrorists. Verloc abhors the idea of killing civilians, but if he fails, his identity as a spy will be exposed.