The United States of Leland is a 2003 American drama film written and directed by Matthew Ryan Hoge that follows a meek teenage boy, the eponymous Leland, who has inexplicably committed a shocking murder. In the wake of the killing, his teacher in prison tries to understand the senseless crime, while the families of the victim and the perpetrator struggle to cope with the aftermath. Wikipedia
Leland: When I say I don't remember that day, I'm not lying. I wish I did, but I just don't. Sometimes the most important stuff goes away. Goes away so bad it's like it was never there to begin with.