Unknown

Released: 2011
Mystery, Drama
Director: Jaume Collet-Serra
Starring: Liam Neeson, Diane Kruger, January Jones
Rated: PG-13
Running Time: 113 minutes
 

The breakdown: A man has a car accident and when he wakes he realizes no one, not even his wife recognizes him.

Note: There are no less than three films with the same title, different plots.  I have seen two.  This is the most recent movie.

Liam Neeson plays a biochemist who travels to Germany with his wife to attend an important conference.  After arriving at the airport they catch a cab, but the driver leaves Neeson's important briefcase on the luggage rack on the curb and Neeson does not realize it until arriving at the hotel.  As his wife begins checking in, he catches a cab before he can even tell her what's happened.  On the way back to the airport, the taxi driver has a terrible accident and the car ends up in the river.  The taxi driver escapes, but Neeson has hit his head and lays in the car unconscious as it sinks.  She (the taxi driver) rescues him and then runs away.
When he wakes up in the hospital days later he finds out he had no ID on him and they didn't know who he was or who to contact.  He begs the doctor to let him out of the hospital as he sees a news report for the conference he's supposed to be at and remembers his wife must be really worried and he needs to get back there.  As he arrives, the conference cocktail party is in full swing and he sees his wife.  He needs his invitation and ID which he has neither, but pleads with the front desk manager to escort him to his wife to prove his identity.  He agrees and as they get to his wife, Neeson is relieved to see her, but she doesn't recognize him.  She claims she's never seen him before and that her husband is already there with her.  Neeson is mad and confused.  The manager pushes him to either leave or be arrested and he finally gives in to leaving.  In the cab on the way back to the hospital he tells the driver he's changed his mind and to just leave him just outside the hotel.  He looks in the window and sees his wife with the other man who claims to be him and is dumbfounded.  He ends up going back to the hospital after all to have further tests to see if he's confused or forgetting things.

Oh, I can't tell you anymore because if you want to see it, you really should on your own.
Don't let me ruin the surprises for you.

Overall, I give it a 4 out of 5 for being entertaining and keeping you guessing as to what's going on.