Smart, elegant, and deeply moving, The Children Act stars two-time Academy Award-winner Emma Thompson in a riveting performance as Fiona Maye, a British High Court judge who, in the midst of a marital crisis, must rule on a life-changing legal case concerning the survival of a teenage boy. At issue whether to order a blood transfusion on the boy (Dunkirk's Fionn Whitehead), a Jehovah's Witness who, just months short of his eighteenth birthday, is refusing on religious grounds the procedure that would save his life.