[Sherlock is in less than a pleasant mood. He is supposed to be released tomorrow - or so, but that just isn't soon enough. So he tried to escape again. They now have him in a 'locked room'. Which the staff gladly give Conan access to, instructing him to buzz if Sherlock becomes too unruly or to let him out when he wants to leave.]

[Sherlock spots the package before anything else.]

What the hell is that?

[Clearly, he's in a mood.]