You Were Made for This by Michelle Sacks

I was deceived by the blurb and thought it was a novel about people. Well, it's a book about monsters and the horrendous crimes they commit. It will make you read fast, hold your breath and pray that nothing bad happens but to no avail because the author has done a great job depicting pure evil in disguise.
There were some pages with vivid descriptions I just couldn't read and it made me wonder what happens behind the closed doors of the houses of some apparently perfect families. It took me several days to get rid of this feeling of restlessness.
If you want to read a true horror story, this is the one.