This is a film so confusing, even its central character has no idea what's going on. Christopher Nolan's brilliant psychological thriller tells the tale of Lenny (Guy Pearce) - a man with a severe short term memory problem.

He can't remember what just happened, so anything really important is quickly tattooed onto his body. Snippets of important information on his person include clues as to who raped and murdered his wife. Shot in colour and black and white, as well as out of sequence, this was never going to be easy...