Just a taste of some of the not-so-nice mail we authors get: 

Ms. Gerritsen
What a waste of talent,time and paper, to write a book such as The Sinner. This is the first of your novels I have read and half way through it, I tossed it the garbage where it belongs.
Hal K.

I don’t even know the man.  But he felt p.o.’ed enough to hunt down my email address and send nasty thoughts my way.  

Who are these people?

This, by the way, is one of the mild ones.  I can’t count the number of times readers have told me I’m going straight to hell.