One Tree Hill - Season 4 Apr 2026

Season 4 of One Tree Hill (2006–2007) is the final year of high school for the main characters, focusing on the closure of their adolescent lives and the resolution of the series' darkest mysteries. It was the first season to air on The CW network following the merger of The WB and UPN.

: The prom episode featuring the final confrontation with "Psycho Derek". One Tree Hill - Season 4

: Deals with the aftermath of the bridge accident involving Nathan, Rachel, and Cooper. Season 4 of One Tree Hill (2006–2007) is

: Lucas has a heart attack and is "visited" by Keith while in a coma; Haley is hit by a car. : Deals with the aftermath of the bridge

: Brooke and Lucas officially break up after she realizes his growing feelings for Peyton. By the middle of the season, Lucas and Peyton finally begin a serious relationship.