You were only seven years old when you witnessed your mother's murder. Although you did not see her attacker clearly, you are pretty sure who it was.

Thanks to you, he went to prison for twenty years. Now he's out. And you are no longer certain that the man you identified that terrifying evening really was the killer.

But if it wasn’t him, who was the stranger on the stairs? And can he now be coming for you?

Inspired by a shocking real-life case, a gripping psychological thriller by a criminal defence lawyer who has seen it all.