Misery is a psychological horror novel by Stephen King. The novel was nominated for the World Fantasy Award for Best Novel in and was later made into a Hollywood film and an off-Broadway play of the same name. It creeped me out!
Ladder of Years, Anne Tyler. I am not a big fan of Anne Tyler but I found this book enormously appealing when my children were teenagers. It's about a woman on a family holiday that takes a walk on the beach and just keeps going .