From Wikipedia, the free encyclopedia. James Martin Lafferty (born July 25, 1985) is an American actor, director and producer. He portrays Nathan Scott on The WB/CW television drama One Tree Hill. In addition to his role on the young adult drama, Lafferty is also known for his appearance as Justin in S. Darko, the 2009 sequel to the 2001 film Donnie Darko.

Description above from the Wikipedia article James Lafferty, licensed under CC-BY-SA,full list of contributors on Wikipedia.