Episode 5x12 is the 99th ,which obviously sets up for the 100th episode. In the beginning of the 99th, we watch Nate working with Gossip Girl to learn more about the accident, while Chuck keeps doing a survey of his own, stalking Blair to learn the reason she left him. I'm feeling really sorry for Chuck these days, he seems so desperate to find out the truth. And the insistence he shows might be the reason that he will lose Blair's trust...(again)
