Four--Four days? That isn't right, Sherlock. [he moves aside some magazines on the table and has a seat on it across from him] You haven't been missing at all. Or I haven't. Neither of us has!

[starts peering at Sherlock's face] Maybe you just hit your head, or you passed out. You have had something to eat, haven't you?

[there are any number of medical ailments that he really doesn't want to think could be the cause of such a great amount of time right now. then again...he can't explain the old experiment set-up away with the same exact reasoning. but that's something he'll have to think on once he's figured out what's wrong with Sherlock. he reaches for Sherlock's hand, aiming to check his pulse rate.]