Nessa's past, including her kidnap eight years previously in Gaza, is dug up by MI6 boss Sir Hugh Hayden-Hoyle, who is intent on getting answers despite being blocked by the CIA.

Cast: Maggie Gyllenhaal, Lubna Azabal, Tom Bateman, Tobias Menzies, Andrew Buchan, Katherine Parkinson, Stephen Rea, Martin Hutson, Janet McTeer, George Georgiou, Rupert Frazer, Paul Herzberg, Oliver Bodur, Ben Smith, Suzann McLean, Julian Spencer, Genevieve O'Reilly, Eve Best