"Who was that masked man with the datestamp?"

He moves in shadows like a thief, as insubstantial as smoke, as deadly as... erm, smoke. If your house is burning down. Yes.

All have heard his name, none have seen his face. Or know they have seen it, anyway. Maybe I should rephrase that.

They call him El Sombra de Biblioteca and aren't entirely sure whether that's the correct use of the Spanish or not. They did French at GCSE instead.

He stalks the libraries of the night. If you seek to do damage to a book, you may feel his flashing blade as it cuts you in the shape of the NLM classification WO 700. This is fairly fiddly and may take him several attempts. It would be easier if you stayed still.

And like that, he's gone...