I know this will strike people as an odd choice, as thriller is my game (at least on Inkshares), but there are two books that I re-read every few years and none of them are in my genre!
Taipan by James Clavell
Dune by Frank Herbert (the first one)
Also may I add that if any of you are Urban Fantasy authors (
@Rick Heinz pay attention) - and you haven’t read
The Master and Margarita by
Mikhail Bulgakov, please stop everything you are currently engaged in and read it!