I thought I'd second a recommendation from Ben Poole for the Myron Bolitar thrillers by Harlan Coben. The first one was published here in the States about a decade ago, but I had never heard of them until recently. I usually don't enjoy thrillers all that much because I can usually figure out the ending about halfway through. I can honestly say that I haven't gotten any of these figured out before the end. I've come close, but Coben always throws in one last twist that I can never see coming.
Myron is a fantastic lead - his sense of humor reminds me very much of Bill Murray.
I started in the middle of the series, and the books can be read as standalones, but I'm now going back and reading them in order:
One False Move
The Final Detail
(I've only gotten as far as Fade Away, so no spoilers!)