One Tree Hill

In the season premiere, as Brooke and Julian begin to adjust to life with their new children, Haley and Nathan find themselves dealing with similar issues. Although they don't know it yet, faces from the past threaten to interrupt plans for all their futures. Meanwhile, a mysterious problem arises for Clay and Quinn.

Brooke discusses a new business venture with her father (recurring guest star RICHARD BURGI -- Desperate Housewives), as Julian stresses about his own investment. Quinn convinces Clay to get help, and Millie struggles to be honest with Mouth. Meanwhile, Chris Keller makes Alex (recurring guest star JANA KRAMER) an offer she may not be able to refuse and Nathan volunteers to scout in Europe, leaving Dan with Haley and Jamie.

Dan helps a struggling Haley at Karen's Café. Meanwhile, Quinn discovers that Clay is hiding something from her, and Chase tries to mend a broken heart. Brooke is let down by her lunch plans with her dad, and Julian makes a life-changing mistake.

As Julian deals with his guilt, Brooke helps Haley confront a new rival café and its difficult owner. Meanwhile, Chase's new girl has a complicated secret, and Quinn takes extreme measures to help Clay realize he's worse off than he thought.

As Quinn distracts Jamie, Haley searches for Nathan. Clay finally gets answers about his condition. Meanwhile, Julian attempts to get back to a normal life, while Brooke tries to give Tara (recurring guest star CHELSEA KANE -- Dancing with the Stars) a chance.