Dark waters / G. R. Halliday.

"Three mistakes. Two murders. One more victim to go..." -- Cover.

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 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. Days later, when another victim surfaces, Monica knows she is on the hunt for a ruthless killer.