“Yes, my boy, these were all done prematurely before my biographer had come to glorify me.” He lifted bundle after bundle in a tender, caressing sort of way. “They are not all successes, Watson,” said he. “But there are some pretty little problems among them. Here’s the record of the Tarleton murders, and the case of Vamberry, the wine merchant, and the adventure of the old Russian woman, and the singular affair of the aluminium crutch, as well as a full account of Ricoletti of the clubfoot, and his abominable wife. And here⁠—ah, now, this really is something a little recherché.”

He dived his arm down to the bottom of the chest, and brought up a small wooden box with a sliding lid, such as children’s toys are kept in. From within he produced a crumpled piece of paper, an old-fashioned brass key, a peg of wood with a ball of string attached to it, and three rusty old disks of metal.

“Well, my boy, what do you make of this lot?” he asked, smiling at my expression.

“It is a curious collection.”