Old friends Hannah and Quinn have grown apart over the years as their lives take them in opposite directions. Hannah cares for her three young children, her career on hold, while Quinn has a successful job in advertising, where she works hard and plays harder. But their friendship hangs together because of a terrible secret they share from their university days – a debt Hannah owes Quinn that they can never discuss. Quinn has always kept her professional and personal lives separate, but these worlds collide when a colleague assaults her. As her life starts falling apart, Quinn decides to take revenge on her attacker – and she expects her old friend Hannah to help. But when things begin to unravel, Hannah must decide how much she’s willing to risk in order to return the favour. A gripping examination of the darker side of friendship, power and loyalty. How far would you go to repay a debt?