Takes place during or shortly before STUD. Sorry about the Nutty Chronology of Doom.
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"You must eat sometime," I said, staring shocked at my mysterious co-lodger.
"Oh, I will," he assured me, "don't worry about me. I just forget, sometimes."
"How can you forget to eat?" The idea was appalling to a discharged military man who ate as though he hadn't seen food in months.
"At least I'm not skeletal." Holmes, and collapsed into his chair.
"Skeletal?" I repeated, hurt. "Myself? Really?
But he had passed beyond my ken, into a dreamy, melancholy haze of tobacco smoke and warmth. Now I could examine him.
He was practically concave, a tragically empty amalgamation of bones.