High Quality Content by WIKIPEDIA articles! The following is a list of episodes for One Tree Hill, an American television series. One Tree Hill was created by Mark Schwahn, who has also written over a third of the episodes, including each season`s premiere and season finale. Schwahn shares executive producer duties with Joe Davola, Greg Prange, Mike Tollin, and Brian Robbins. It is produced by Tollin/Robbins Productions and Warner Bros. Television.