The book: Gone Girl by Gillian Flynn
The hook: I never like to give away too much with this one, because the more ignorant you go into it, the better. I will say that this is the story of a toxic marriage, deceit, and manipulation. I've never read anything like it before or since.
Fear factor: Besides being terror-stricken with the idea that all relationships are f*cked up under the surface, this story has some geniunely icky moments that may give you goosebumps.