London, 1605. Robert Catesby, a 33-year old Warwickshire gentleman, devises a plot to blow up Parliament and kill the King.

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.

Testament of Youth is a powerful story of love, war and remembrance, based on the First World War memoir by Vera Brittain, which has become the classic testimony of that war from a woman’s point of view. A searing journey from youthful hopes and dreams to the edge of despair and back again, it’s a film about young love, the futility of war and how to make sense of the darkest times.