One of the summer's hottest books was Gone Girl by Gillian Flynn. That title still has a hefty holds list, but if you're looking for other suspenseful reads/studies in character for now, check out one of these:
The Shirley Jackson Awards honor outstanding achievement in writing psychological suspense, horror, and the dark fantastic. Try out some of the nominees if you dare! And make sure to check out some books by the awards' namesake, Shirley Jackson, while you're at it!