Picture Perfect by Jodi Picoult

A woman is found in a Los Angeles graveyard, unable to remember anything about herself or her life. No one is more surprised than she when, days later, her husband comes to the police station to take her home - and turns out to be Hollywood's leading superstar, Alex Rivers.

Cassie Barrett begins to remember bits about her life: her passion for her career as an anthropologist, the whirlwind romance on location in Africa, her childhood. But she senses there is something troubling in this perfect life that she can't remember; and then, when she sees a pregnancy test, it all comes flooding back - and once again, Cassie feels there is no alternative but escape...