- Genres: Drama, Sport
- Actors: Chad Michael Murray, James Lafferty, Hilarie Burton, Bethany Joy Galeotti, Sophia Bush, Paul Johansson, Lee Norris, Antwon Tanner, Jackson Brundage, Barbara Alyn Woods, Lisa Goldstein
There were 22 episodes in Season 1, 23 episodes in Season 2, 22 episodes in Season 3, 21 episodes in Season 4, 18 episodes in Season 5, and 24 episodes have been ordered for Season 6.
The first season deals with the first half of Lucas’s, Peyton’s, Nathan’s, Haley’s and Brooke’s junior years (up to the first game of the State Championship). Major storylines include the rivalry between Nathan and Lucas, the blossoming of Haley and Nathan’s relationship, the set-up of the Brooke-Lucas-Peyton love triangle, the parent’s own love quadrangle and the basketball state championship.
In the second season the Taggaro family, who had left their previous home due to rumors concerning their daughter Anna, move to Tree Hill. It marks a move away from the love triangle as it explores different romances (Lucas and Anna, Jake and Peyton and Felix and Brooke). Haley and Nathan’s marriage hitting the rocks as well as the repercussion of Dan’s genetic disease (especially on Lucas) also plague this season. Karen goes back to school, beginning a relationship with a younger teacher in addition to starting the Tric club. Also in this season, a troubled Deb struggles with an addiction.
On February 7, 2007, SOAPnet announced that it would be picking up reruns of The O.C. and One Tree Hill. The deal made with the show’s production company, Warner Brothers, states that SOAPnet holds on to the option of picking up the fifth season for syndication which SOAPnet did, airing fifth season episodes beginning in January 2009. The show airs at 1:00 p.m. and again at 2:00 p.m. EST followed by two hours of The O.C. and Beverly Hills, 90210.