[Whether the underscore is ignored purposely or by accident remains to be said. Either way, Brennan takes Booth's statement as fact. The end of the discussion. Not that there really is much more to say. Aside, perhaps, one final warning.]

Do not be surprised if you find either Sherlock utilizing the laboratory at late hours, Booth. It was agreed upon in the initial arrangement that he would be allowed to come and go as he pleased, regardless of the time.