Just found this thread yesterday - browsed back a fair few pagers and I've made a note of quite a few authors I haven't tried yet. Always a bonus.
I'm finishing the last few chapters now of The Gate House by Nelson DeMille, the sequel to The Gold Coast from a few years ago. Not bad, but lacks the depth of some of his others like Plum Island and The General's Daughter.
My normal reading tends to be books by Harlan Coben, Michael Connelly, John Sandford, Michael Crais, etc., so if anyone knows of other authors in a similar vein I'd be interested.