In this compelling five-part psychological thriller, a defence barrister is faced with the proposition: what can you do when you have defended the indefensible? When the man you have helped proved innocent is, in fact, guilty? James Purefoy stars as a criminal barrister recovering from a traumatic series of events who finds himself being pursued by a ruthless police detective. Two men from completely different worlds whose professional lives will intertwine in a dangerous game of cat and mouse with murder at its heart. Nail-biting tension builds through a journey of moral dilemmas that hurtle towards a devastating conclusion.