Just saw the preview! Wow!

Marissa gets back together with Ryan or something? Seth and Summer no doubt will just have their own little conflicts, strengthening their relationship. Jimmy and Sandy stop being partners on the lighthouse thing? But the most important thing...

THEY KILL OFF SOMEONE

WHO IS IT?! I'm thinking someone closer to Ryan since in the preview he looked more devastated when Marissa was right beside him... Oh I hope it isn't Seth, he was too cool!