Gone Girl by Gillian Flynn
I found a used copy of this at a library book sale and, feeling the need for some entertaining fiction, I picked it up and read it almost immediately and within a few days. The suspense starts up right away, with the husband's description of his wife that includes talk of her skull and what might be in her mind and brains. Entertaining it was, though it took a long time to end. It's sort of a mystery, but from the points of the view of the victim and the main suspect.
Warning: contains plenty of language (by which I mean bad language, of course) and some sex. And violence. And creepiness.