Niels Mueller is a filmmaker currently resident in Los Angeles. He was born and raised in Milwaukee, Wisconsin, and attended Tufts University where he earned a BA. While an undergraduate, he collaborated with fellow-student Gary Winick on a number of independent film projects. Mueller subsequently attended film school at UCLA where he earned an MFA. His most notable work remains The Assassination of Richard Nixon (2004), starring Sean Penn, which he directed and also co-wrote with Kevin Kennedy. Other writing projects include Tadpole (2002), which he co-wrote, 13 Going on 30 (2004), although he lost an initial writing credit on this latter film in a subsequent dispute arbitrated by the Writers Guild of America, Letters to Juliet (2010), and "Rat Bastard" (in production). He has additionally worked as an editor, Sweet Nothing (1996), and producer, Sweet Nothing (1996). A pilot he wrote with Kevin Kennedy, The Defenders, was picked up by CBS television for the Fall 2010 season. The series, starring James Belushi and Jerry O'Connell, chronicles the adventures of two defense attorneys in Las Vegas.