Also insanely underfunny.

He found a copy of Enemy of the World 6 also, but it hasn't been a missing episode since October.

Holmes mentions hearing of Watson's "bereavement" at the beginning of "The Empty House." She gets a mention here and there in the Adventures and the Memoirs, and calls Watson "James" in "The Man with the Twisted Lip," which is also the source for the opening of this episode with Watson going to roust out the addict.