The segundo season consisted of 23 episodes and ran from September 21, 2004 to May 24, 2005.

After Lucas and Keith learn of Dan's corazón attack, they return to árbol colina and Dan decides he wants to get to know Lucas. Lucas cautiously enters into a relationship with his father. After Dan learns that Lucas has inherited his hypertrophic cardiomyopathy (HCM), the genetic defect which caused Dan's own corazón attack, he convinces Lucas to mover in with him and pays for his medication, keeping his condition a secret. Dan also agrees to stay away from Keith and his girlfriend Jules (guest star, Maria Menounos)...

8.01 || Asleep At Heaven's Gate

Brooke: Before tu say another word, tu should both know that I just have just come from the city jail, where I was frisked por a large supposedly female cop who was very thorough in her cavity search. Now speak.

Nathan: Is everything okay?
Doctor: Yeah. I just wanna run some tests.

Mia (to Haley): Speaking of slutty, congratulations on being pregnant.

Clay: I just realized that I haven't seen a single person on this playa all day...have you?
Quinn: No.
Clay: Do tu know what that means? Skinny dipping.

Julian (to Brooke): Get ready for my greased lightning!

Haley:...