"M.A.D." is the twentieth episode of the first season of the American mystery television series Veronica Mars. Written by Phil Klemmer and John Enbom and directed by John Kretchmer, the episode premiered on April 26, 2005 on UPN.The series depicts the adventures of Veronica Mars (Kristen Bell) as she deals with life as a high school student while moonlighting as a private detective.