In 1950s London, a renowned dressmaker's meticulous lifestyle begins drastically changing as his relationship with his young muse intensifies.
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.
A young couples lives are turned upside down when the birth of their first child is accompanied by terrifying entities that threaten their newly formed family.
