Picture Perfect by Jodi Picoult

Synopsis from her website:

As Picture Perfect begins, it is daybreak in downtown L.A. A woman suffering from amnesia is taken in by an officer new to the L.A. police force, after he finds her wandering aimlessly near a graveyard. Days later, when her husband comes to claim her at the police station, no one is more stunned than Cassie Barrett to learn that not only is she a renowned anthropologist, but she is married to Hollywood's leading man, Alex Rivers.
As Alex helps Cassie become reaccustomed to her fairy-tale existence, fragments of memory return: the whirlwind romance on location in Africa, her major anthropological discovery, the trajectory of Alex's career. Yet as Cassie settles into her glamour-filled life, uneasiness nags at her. She senses there is something troubling and wild that would alter the picture of her perfect marriage.

Pattie's comments:

This is my third Picoult read, and it will not be the last. This book kept me up till this morning at 1:00, so I could finish it. It is very, very good. It is not what I expected it to be, exactly. I mean, I suspected things were not all as they seemed, but the way the story unfolded, I had sympathy for each character, and each is flawed. Even the worst villain in the story garners more than a bit of my sympathy, in spite of his evil actions.

I don't know how Jodi Picoult does it, but she has a way of making sure each of her characters is good AND bad, very real, and sympathetic.