Yep. WP should be back by 7X16. I know there was talk he would be back by 7X15 [Laws of Gravity], but there's no mention of Grissom, so that's an assumption on my part. For me, I'm not so much dreading Grissom leaving. It's his coming back and what effect that will have on the team. I mean, if you go by the preview, it's like he's saying good bye, as in permanent good bye. So then what, he shows back up one day? Kind of an "Oh, hey, I'm back!" thing? Seriously awkward. I'm really having a hard time reconciling the emotion of the preview and the thought that Grissom will be back in his office in, what, a month? Or maybe more-TPTB could do the whole "time warp" thing and he shows up six months later. I'm thinking this is really a dry run for when/if WP leaves for good and the writers haven't quite figured out how to bring him back without it being contrite.