Annabelle has come to the Scottish Highlands to escape. But as she speeds along a deserted mountain road, she is suddenly forced to swerve. The next thing she remembers is waking up in a dark, damp room. A voice from the corner of the room says ‘The Doctor will be here soon’.

Scott is camping alone in the Scottish woodlands when he hears a scream. He starts to run in fear of his life. Scott is never seen again.

Meanwhile DI Monica Kennedy has been called to her first Serious Crimes case in six months – a dismembered body has been discovered, abandoned in a dam. Days later, when another victim surfaces, Monica knows she is on the hunt for a ruthless killer.

But as she begins to close in on the murderer, her own dark past isn’t far behind.