One Tree Hill Mourns Luke Kerr September 16, 2008 7 Comments One Tree Hill airs it's third episode of the season tonight and is mourning the death of Quentin. I watched much of the first four seasons but lost interest last season. However, like most series I phase out, I tune back in for the season premiere and finale. The season six premiere had me hooked and now I'm playing catch up on a few things. What are you thinking of One Tree Hill's sixth season so far?