I love true crime. My favorite is Ann Rule. She passed so I'm bummed, no more Ann Rule books.
I also love history so I read a lot of that genre.
So no surprise, one of my top books of all time is Devil in the white city by Erik Larson. Horror,true crime.and history all rolled into a great book. ( I've read two other books by him (history) both good.
The scariest book I have ever read is The great and secret show by Clive Barker. Weave world by him is good too.
John Saul and Dean Koontz I like better than Stephen King but I haven't read everything by him so It's just MO so far,
A book that I love love love is Water for Elephants by Sera Gruen.....The movie sucked!