The intentions of Christopher Nolan in the making of Insomnia and Momento.

The film 'Momento' began production in the year 2000 under the control of director Christopher Nolan. Momento was Nolan's first full production movie, after the previous success of 'following' in 1998 New Market films optioned for Nolans next proposed film 'Momento'. The movie is based on the short story Memento Mori, written by Christopher's brother, Jonathan Nolan. It follows widower Leonard Shelby (played by Guy Pearce) who suffers a head injury and is unable to form new memories. In keeping with this inability to know what has just happened before, the film's narrative structure runs in reverse (with an interlude between each pair of major "flashback" sequences).