Not into horror. I've got local politics to give me the willies instead.
However I am an avid reader, and like you if I find a good book read every single thing ever written by that author. Which is much easier if they are dead, and don't keep adding to their body of work.
Suprisingly most of my favourite authors are American, and include, James Baldwin, Truman Capote, Bret Easton Ellis, and Alice Walker.