Katie Shaw always looked after her younger brother Chris - until she left him alone one carefree afternoon and he was savagely attacked. He hasn't spoken to her since. Now a mother, Katie vows not to repeat her mistakes. Carelessness cost her one family, and she won't let it destroy another.
Then she receives a call from the police.

They're investigating a particularly brutal murder, in a half-ruined house that once belonged to a notorious local serial killer. The case has thrown up many unsettling questions, but only one prime suspect: Chris. The detective wants Katie's help finding him, but she has only one thing on her mind: proving her brother's innocence, and finally making up for her negligence all those years ago. But soon it becomes clear that the killer isn't finished yet.

Which means that even as she attempts to save her old family, Katie is placing her new one in deadly peril . . .