Misery

I loved Paul Sheldon and Annie Wilkes!! They are some of the most interesting characters I've ever read. The majority of the novel takes place with just these two in a single room, with not that much actually happening, but it's riveting.
I'm not sure if this is true, but I've heard Paul Sheldon is supposed to be Steven King, and that made his internal monologue SO interesting.
I'm not a huge fan of horror, only because I'm a scaredy-cat, and this was much more of a thriller than a horror, so that was great! Absolutely recommend!