| Episode cast overview, first billed only: | |||
| James Lafferty | ... | Nathan Scott | |
| Bethany Joy Lenz | ... | Haley James Scott (as Bethany Joy Galeotti) | |
| Sophia Bush | ... | Brooke Davis | |
| Austin Nichols | ... | Julian Baker | |
| Robert Buckley | ... | Clay Evans | |
| Shantel VanSanten | ... | Quinn James | |
| Jackson Brundage | ... | Jamie Scott | |
| Lee Norris | ... | Marvin 'Mouth' McFadden | |
| Antwon Tanner | ... | Antwon 'Skills' Taylor (credit only) | |
| Lisa Goldstein Kirsch | ... | Millicent 'Millie' Huxtable (as Lisa Goldstein) | |
| Paul Johansson | ... | Dan Scott (credit only) | |
| Jana Kramer | ... | Alex Dupré | |
| Lindsey McKeon | ... | Taylor James | |
| Scott Holroyd | ... | David Fletcher | |
| Mitch Ryan | ... | Alexander Coyne | |
Nathan and Jamie join Haley on tour as it comes to a close. Quinn gets her divorce from David. Millicent appears in court for her DUI where Victoria offers her a job as her assistant at Clothes over Bros. Brooke finds it hard to trust Julian particularly when Alex is always by his side and ends up turning to new menswear designer Alexander Coin. Elsewhere, Haley and Quinn's sister Taylor turns up in Tree Hill with Quinn's ex-husband David who is now her boyfriend. Meanwhile, Mouth returns from L.A. Written by Anonymous