“Every day Christine wakes up not knowing where she is. Her memories disappear every time she falls asleep. Ben her husband needs to explain to her their life together every morning. With the encouragement of her doctor, Christine starts a journal to help jog her memory every day. One morning, she opens it and sees that she’s written three unexpected and terrifying words: “Don’t trust Ben.” Suddenly everything her husband has told her falls under suspicion.”
I have not read a suspense/thriller book in a very long time and ohh my this was a goodie!! I seriously did not want to put this book down. The book begins as a twenty something Christine wakes up in a stranger’s bed unable to remember how she got there. She quickly learns some disturbing facts: the stranger is her husband, Ben who she can’t remember at all, she is middle aged and has forgotten most of her life, and she suffers from a rare form of amnesia where she can’t retain memories from day to day.
I highly recommend this fantastic book – read it!! lol 
When I started reading your blurb I was thinking of 50 first dates but that was a comedy. Will add this to my list of “to read”