During a handover to the head of counter-terrorism of MI5, Harry Pearce, a terrorist escapes custody. When Harry disappears soon after, his protégé is tasked with finding out what happened as an impending attack on London looms, and eventually uncovers a deadly conspiracy.

Top Cast

Peter FirthHarry Pearce

Kit HaringtonWill Holloway

Elyes GabelAdem Qasim

Jennifer EhleGeraldine Maltby

Tim McInnernyOliver Mace

Tuppence MiddletonJune Keaton

Eleanor MatsuuraHannah Santo

David HarewoodFrancis Warrender