A Dark so Deadly by Stuart MacBride

Long ago, as a young boy, he asked his parents to stop at the local rest stop so he could visit the bathroom.  When he's doing his business, a sexual predator finds him and tries to take him.  He escapes, but he can't find his family.  The car and the caravan where there, but they were not.  He hides in the caravan until the predator goes away.  In the end, he goes into foster care...

Harper Collins and Net Galley let me read this book for review (thank you).  It's been published so you can buy a copy now.

Callum had become a cop.  He had no idea that the current case he was investigating would go all the way back to that day in his life when he was abandoned.  He's also not popular at the cop shop because he covered for his girlfriend (another cop) and has been thrown in with a bunch of misfits.  They might not be the usual cops but they do solve crimes.

This is a sad read.  The further they go, the more bodies they find.  They had a major suspect and he ran from them and drowned.  There was evidence at his apartment.  But Callum doesn't think that's the end of it.  He thinks two people were involved.

He confirms this by accident and narrowly misses losing his life.  The killer was totally unexpected and his motives were odd.  His mind was unbalanced. I had no clue who the killer was until it was too late for Callum to escape.  I would have been in the same trouble he was.  An intelligent killer is hard to find but sometimes they're too smart for their own good.  This one got overconfident.

It as was a good read if a bit depressing.  All those people who died were chosen for their looks or sexual desire.  They didn't deserve to die.

You read it and let me know if you figure out who the murderer is before you get to the climax.  I sure didn't...