How far would you go to find your missing sister?
A normal day in the park turns into a nerve-shredding nightmare for eleven-year-old Marnie Hammond when she finds herself in a desperate chase to stop the 'bad man' from abducting Abby.
Fifteen years later, Marnie is a Detective Sergeant, but the memory of her missing sister still haunts her dreams.
When it becomes clear that something monstrous is stalking the streets of Kirkhead, DS Hammond has her hands full, and after remains are discovered buried in dense woodland, Marnie fears the worst. But this is only the start of a nightmare that will unearth more bones, more victims and the terror that Abby might be among the dead.
To stop the maniac Marnie knows she must break the rules, but when the twisted killer turns his attention on her it becomes a fight not only for the truth but for her sanity and her survival.
Can Marnie catch the murderer and solve her sister's disappearance?