One of the few films I've ever seen that deserves to be called a thriller.

A man finds out that his dead wife might not be dead after all when she emails him, and off he goes trying to uncover what's going on. Except he's not Wesley Snipes or Keanu Reeves playing a secret agent, he's just some French bloke playing a doctor, which makes him all the more empathisable (actual word!).

Very tense, quite exciting, and the only film I can remember that has actually made me sit on the edge of my seat. You really get behind the main character because he's just a normal bloke, and it could happen to you and your wife. Or pet, if you don't have a wife.