In the darkest days of the Northern Ireland troubles members of the security services almost thought it was their duty to act beyond the law. Vulnerable individuals were used. Identities changed so that valuable information could be obtained. But what happens years later when that new identity is no longer a secret? What happens to the family who thought their loved one had been dead all this time? And what happens when a forbidden love affair is thrown into an already explosive mix? A former terrorist is now a live target for retaliation by his former comrades who he once betrayed. Long held rumours about killers being hired by the security services are rife once more. Who will win and who will escape the past with their life? Ian Taylor and Mark Earnshaw are in a race to find out and they're forced to make the kind of decisions that will have devastating consequences for the rest of their lives.