The true tale of pioneering 18th century barrister William Garrow, who acted as counsel for the accused, introducing the concept of 'innocent until proved guilty' at London's Old Bailey.
Garrow successfully defends a man falsely accused of murder at a polling day riot. Approached by the victim's daughter Garrow agrees to find and prosecute the real murderer putting himself in grave danger from the man's colleagues and chief magistrate of the constabulary. Lady Sarah seeks documents to discredit Lord Melville and legally regain her son.