Returning to work after an enforced absence, Detective Kay Hunter discovers she wasn't the only victim of her previous investigation. Determined to prove herself once more and clear his name, Kay undertakes to solve a cold case that links DI Sharp to his accuser. But as she gets closer to the truth, she realises her enquiries could do more harm than good. Torn between protecting her mentor and finding out the truth, the consequences of Kay's enquiries will reach far beyond her new role...