ATWT 12-9d: Casey saves suicidal Mark, who attacked Alison during election (GREAT non-Nuke episode)

WATCH PART 1 FIRST - This episode is only tangentially Nuke-related in that Kevin's homophobic campaign manger, Mark, returns. Otherwiss, it's a fantastic episode where Billy Magnusson (Casey), really gets to shine. The kid has amazing comedic timing. Casey is a dysfunctional irresponsible character that I should hate for many many reasons. But I don't because he's so lovable. Like Van Hansis, I think they chose the perfect actor for the role. I cannot imagine the previous actor making the character so interesting and enjoyable. He had one face and one voice, and little talent beyond flexing and exposing his underarms. The current Casey has all that and more. And I love the chemistry between Casey and Alison -- just like I loved the chemistry with Luke when he tortured Casey pretending to be boyfriends.