It's been 15 years since One Tree Hill premiered on The WB on Sept. 23, 2003.
The show, which aired on The CW starting with its fourth season, followed estranged half-brothers Lucas (Chad Michael Murray) and Nathan Scott (James Lafferty) as they are forced to work together when Lucas joins the Tree Hill Ravens basketball team. While the first four seasons took place at Tree Hill High School, the final five followed the characters as they navigated adulthood.
The series was set in the fictional town of Tree Hill, North Carolina and was filmed in Wilmington, North Carolina.
The ensemble cast also included Hilarie Burton, Bethany Joy Lenz, Paul Johansson, Sophia Bush, Barry Corbin, Craig Sheffer, Moira Kelly, Barbara Alyn Woods, Lee Norris, Antwon Tanner, Danneel Harris Ackles, Jackson Brundage, Lisa Goldstein Kirsch, Austin Nichols, Robert Buckley, Shantel VanSanten, Jana Kramer, Stephen Colletti and Tyler Hilton.
The series made headlines again in November 2017 when a number of cast and crew members came forward with sexual misconduct allegations against creator Mark Schwahn.
One Tree Hill concluded its ninth and final season on April 4, 2012.
Read on to see what the show's alumni have been up to since that final season.