Sunday, October 5, 9-10:30 pm and October 12-November 2, 9-10 pm ET
An expatriate mathematician returns to England to find the nation transformed into a hyper-paranoid surveillance society, plagued by terrorists, fugitives and spies. This fast-paced, five-part thriller looks at the transformative powers of technology. Starring Robert Carlyle, Benedict Cumberbatch and Anamaria Marinca, scripted by Peter Berry ("Prime Suspect 6").

An expatriate mathematician returns to England to find the nation transformed into a hyper-paranoid surveillance society, plagued by terrorists, fugitives and spies. Searching for the truth about his brother's mysterious death, he is catapulted into an international conspiracy - and a passionate love affair with his brother's widow. The five-part thriller stars Benedict Cumberbatch (Atonement, "To the Ends of the Earth") as Stephen Ezard, Anamaria Marinca (4 Months, 3 Weeks, & 2 Days) as the enigmatic and beautiful sister-in-law Yasim and Robert Carlyle (The Full Monty, Trainspotting as rogue agent David Russell.