Advice on strong fiction

Hey all - I've been very much in an escapist mode lately, and have been finding comfort in re-reading my Frederick Forsyth novels. I'd pursue Tom Clancy next, but I've read that his conservatism reveals itself in his writing.....and I'm not sure that I'd enjoy that. (Feel free to share your opinions on this.)

As you can tell, I enjoy intrigue - but will be open to any/all suggestions for fiction books that won't exacerbate my already depressive state. So if you can share with me your favorite fiction authors and why you enjoy them, I'd greatly appreciate it. I'm not much of a science fiction fan - but don't hesitate to attempt to sell me on good sci-fi works!

Thanks in advance ---- PM