I wouldnt say it was worth the read if you have the slightest ability to figure out a crime novel. I solved it about 3 chapters in, when you meet the whole cast you get all the answers. 

I couldn't stand Cass from jump, so I knew she was the stabber. I knew the kids had done it. The men in this book are truly so shallow, yes Ethan is the serial killers son, that was easy to figure out, Cody was obsessed with the mistress and then had a weird kink about being a savior. The acceptance of pedophiles is fucking weird.

Thanks for adding to the page count I guess.