China Lake, by Meg Gardiner.
A thriller about a lawyer-turned-writer in Santa Barbara, California who has to save her nephew from fanatics acting under the guise of religious extremism.
My mystery book group read this, and I loved it because it's full of action, fun, and surprises--just what a thriller should have!
I also enjoy short stories, and one that stood out for me was "Uncle Moon in Raintree Hills," by Fred Chappell, in The Magazine of Fantasy & Science Fiction, Sept/Oct, 2010. I loved the way this story evokes the vivid imagination of childhood along with the smells of autumn in the countryside, all rolled up with just enough creep factor.