The third season consisted of 22 episodes and aired between October 5, 2005 and May 3, 2006.

Three months later, things pick up where they left off at the beginning of the summer. Lucas and Peyton spent their summer together and are hiding a secret from Brooke when she returns from California and proposes a non-exclusive relationship with Lucas. Brooke takes pity on a homeless Haley and takes her on as her roommate. Haley tries to win back Nathan, who has spent the summer at "High Flyers", a baloncesto camp, however Nathan isn't ready to trust Haley again. He pays Chris to come back to Tree...