One Tree Hill

As the gang returns from Utah, Brooke and Julian are engaged, Haley is pregnant, and Clay and Quinn's lives hang in the balance.

Clay and Quinn discover they've been shot. As they fight to live, Nathan and Haley struggle with the situation. Julian tries to keep Jamie busy, and Brooke's legal troubles grow.

Nathan makes a huge decision regarding his career. Brooke and Julian take Jamie for the day, while Victoria (DAPHNE ZUNIGA) and Millicent hatch a plan.

Brooke deals with her mounting financial troubles. Meanwhile, Julian begins a new film project, while Alex and Chase (STEPHEN COLLETTI) spend the afternoon together.

As Clay is discharged from the hospital, Nathan contemplates walking away from the NBA. Meanwhile, Chase (recurring guest star STEPHEN COLETTI) discovers a secret about Alex.

As Halloween approaches, Brooke and Julian get an unexpected visitor. Clay and Quinn struggle at the beach house, and Haley and Mia (KATE VOEGELE) host an open mic night.

As the wedding nears, Brooke tries to connect with Sylvia (SHARON LAWRENCE), and Julian looks for his best man at a guys' poker night. Nathan struggles in his new job.

Nathan's career as an agent takes a big step forward. TONY GONZALEZ of the Atlanta Falcons cameos. Chase (STEPHEN COLLETTI) makes a decision regarding Alex and Mia (KATE VOEGELE).

The gang gathers for Thanksgiving with friends and family.

Haley sets up a concert at Tric featuring recording artist KID CUDI. Meanwhile, Quinn sneaks out of town to visit a familiar face, and Brooke and Julian go skydiving.

A storm hits Tree Hill, putting everyone's life in danger.

After a wild night out on the town for her bachelorette party, Brooke and the girls try to piece together the night before. Musician DAVE NAVARRO guest stars as himself.

Brooke and Julian's wedding day arrives.

Julian takes on a directing job to help a friend, and Chase (STEPHEN COLLETTI) mentors Chuck (MICHAEL MAY). QUINTON AARON (The Blind Side) guest stars.

The couples of Tree Hill celebrate Valentine's Day.

The girls plan a surprise baby shower for Haley, and Brooke and Julian pursue adoption. LEVEN RAMBIN (Grey's Anatomy) guest stars as Chloe.

Haley's due date approaches and Brooke and Julian also prepare to begin a family. Meanwhile Chuck (MICHAEL MAY) turns to Chase (STEPHEN COLLETTI) for help with a problem.

The gang gathers at the hospital to await the birth of Haley and Nathan's new baby. While they wait, they reminisce about the memories they have shared over the years.

Quinn organizes a concert at Tric and Brooke gets an offer to return to Clothes over Bros. Meanwhile, Nathan sets his sights on exposing Professor Kellerman (PETER RIEGERT).

As Nathan, Julian and Clay coach Jamie's first Little League game, the accident situation comes to a head. Chase (STEPHEN COLLETTI) asks Alex to take a drug test for him.

Nathan, Jamie, Clay, Julian, Chase (STEPHEN COLLETTI) and Chuck (MICHAEL MAY) camp out on the river court, as Brooke, Quinn, Alex and Lauren (ALLISON MUNN) head to Puerto Rico.

As Brooke and Haley prepare to re-open Karen's Café, Nathan and Clay hit the road looking for new prospective clients.