Ausiello: In the May 3 season (or series?) finale, there are some big cliffhangers. First, Nathan and Haley will finally have their dream wedding, but a tragic accident will leave one character fighting for his/her life — and TV Guide's Damian Holbrook begging for another season. Also, it will be revealed that not one, but two characters are preggers. And finally, Brooke learns a secret that Peyton and Lucas were hiding and walks away from them both. Wow, I detest this show and even I wanna see this episode! (Just kidding.) (Source Ausiello TV GUIDE).

I think the Character who will be fighting for his life will be Lucas. I think the Two Characters who are Pregnant are Karen and maybe either Haley,Peyton they've done the whole Pregnant story line with Brooke already. And the secret that makes Brooke walk away from Peyton and Lucas is about the whole confession in the library in the school shooting episode.

Also the actress who plays Rachel is a season regular (if the show gets picked up)