Content Television has sold upcoming BBC drama The Secret Agent to RLJ Entertainment’s Acorn in the U.S. The four-part period series is due to air on BBC One later this year and will stream in the U.S via Acorn TV, a major purveyor of British drama which last year scored its first-ever Emmy nomination with Agatha Christie’s Poirot: Curtain, Poirot’s Last Case.

From Line Of Duty and Bletchley Circle producers, World Productions, The Secret Agent is the adaptation of Joseph Conrad’s classic novel of terrorism, espionage and betrayal. BAFTA-winning writer Tony Marchant (Great Expectations) penned the transfer.

Toby Jones (very popular with U.S. buyers today at Mip), Vicky McClure, Ian Hart and Stephen Graham star with Charles McDougall (House Of Cards, The Office) directing.

The psychological thriller follows the story of Verloc (Jones), owner of a seedy shop in the heart of Soho. Unbeknownst to his loyal wife Winnie (McClure), Verloc also works for the Russian embassy, spying on a group of anarchists. The Russians are furious with the English establishment’s indifference to the anarchist threat gripping the rest of Europe. So Verloc is assigned a mission: blow up the Greenwich Observatory and make it look like a terrorist attack to provoke a crackdown. Should he fail, Verloc’s real identity as a spy will be exposed to his vicious comrades.