The ABC Murders and The Murder of Roger Akroyd by Agatha Christie
Strangers on a Train by Patricia Highsmith
Zombie by Joyce Carol Oates
Tinker Tailor Soldier Spy by John le Carre
The Postman Always Rings Twice by James M. Cain
The Turn of the Screw by Henry James
Postmortem by Patricia Cornwell (disclaimer: I read this in middle school -- I had very trashy taste -- but I think as a genre novel it's actually well regarded)
And, of course, there's Stephen King...
Dolores Claiborne and Misery
I'm not a genre Nazi -- some of these may technically be crime fiction, espionage, thriller, light mystery or horror -- but you might find something you like here.