Pioneering 18th century barrister William Garrow returns to the Old Bailey to champion the rights of prisoners against the State. But he is making powerful enemies who are determined to destroy him by any means. Garrow challenges a brutal trade that regards slaves as cargo not human beings; and defends a man accused of sodomy: a capital offence in Georgian England. But his work becomes entwined with his personal life when he takes on the abuse of sailors in Greenwich Hospital. In attacking the Admiralty, he attacks Sir Arthur Hill, and Garrow has been accused of adultery with Hill's wife. Garrow's fight for justice has brought his life to centre stage. Now he must give the performance of a lifetime if he is to survive.