More thrillers: Jeffrey Deaver's Lincoln Rhyme series, obviously; also "A Maiden's Grave", a Deaver that doesn't have LR in it but is still excellent.
Also, for something different; Jeff Lindsay "Darkly Dreaming Dexter" and "Dearly Devoted Dexter", for thrillers with a surprise point of view.

Finally, John Burdett's "Bangkok 8" and "Bangkok Tattoo", both very very good.

If you're not really, really into historical fiction but still consider it an option; Yxta Maya Murray's The Conquest and Margaret Drabble's The Red Queen are both excellent.

Re: Margaret Drabble - If anyone remembers Swinging London, London in the early 60's, her first few books are set in that era: The Garrick Year, A Summer Bird-Cage, Jerusalem the Golden, The Millstone.

If you haven't already read Michael Gruber's Tropic of Night, do so now. Best thriller I've read since Silence of the Lambs. The sequel is Valley of Bones, and the next one is due out this spring, Night of the Jaguar.