who started the fire on one tree hill
One Tree Hill (season 3) Nathan worries about Haley as they prepare to renew their vows. Deb confesses to Dan about the fire. Peyton and Brooke's friendship becomes strained when Peyton confesses she still loves Lucas. Nathan, Cooper and Rachel's lives hang in the balance after a car accident. Someone might be pregnant.
One Tree Hill (season 3) This season focuses on the first half of senior year at Tree Hill High School. Starting three months after the second season finale, Haley returns to Tree Hill and tries to save her marriage with Nathan. Peyton gets to know her birth mother. Lucas and Brooke begin a relationship. Keith and Karen get engaged. Nathan patches things up with Lucas, while Mouth begins a complicated relationship with newcomer Rachel, who also spreads a lot of drama through the core characters. After a shooting at the school things between Lucas and Peyton heat up despite Peyton's proposal to Jake.