Unknown with Liam Neeson, and Diane Kruger is both a mystery and thriller rolled up into one. Dr. Martin 
Harris, Liam Neeson, and his wife travel to Berlin for a biotech conference, but things get complicated when Dr. Harris is in an auto accident when he goes back to the airport to retrieve the briefcase that he had left behind. After the accident he goes into a coma and does not regain consciousness for four days. The entire thrilling plot is based on his amnesia after the accident. Everything has changed including that his wife does not recognize him and says she is married to the real Dr. Harris. This is a good movie for a Friday night.