Memento

Memento is a 2000 psychological thriller film written and directed by Christopher Nolan.Leonard was a former insurance fraud investigator searching for the man he believed raped and killed his wife. Leonard has short term memory loss, which he developed as a result of the severe head trauma during the attack on his wife. To cope with his condition, he maintains a system of notes, photographs, and tattoos to record information about himself and others, including his wife's killer. He is aided in his investigation by Teddy and Natalie neither of whom he can trust.

The story is told in a non linear narrative, the story is told in two narratives, one in colour, the other in black and white. The black and white sections are told in chronological order, showing Leonard on the phone in a motel room. Leonard's investigation is shown in the color sequences that are in reverse chronological order. By reversing the order, the audience are unaware of the previous events, just like Leonard.

At the end of the film the two narratives merge into one sequence that begins as black and white and fades into color. The audience then come to realise that although Lennies wife was raped, she survived the attack and Lennie had already killed the man that raped her a year ago with the help of teddy. Lennie's wife had diabetes and he in actual fact killed her by overdosing her on insulin, due to his condition of short term memory loss. Lennie tells this sotry through a made up character (Sammie) who the audience finally realise is actually Sammie. Teddy wanted to help Lennie get his revenge on the rapist of his wife so allowed Lennie to kill him, but Lennie then forgot he had killed him and still searches for him not knowing he is already dead. Teddy allows him to still look for the rapist, so Lennie actually kills other people such as drug dealers.