Vanden looks through the room, and is sorry he did. Although Longcoat was apparently endlessly creative with the mutilations and humiliations of his victims -- at least some of whom appear to have been alive for some of the torture, based on the bloody hand and footprints -- his interests do not seem to have extended into arcane magic.
And then, with a click, Ada turns the key in the lock and opens the iron strongbox. Insider are yet more vile momentos of Longcoat's -- what separates them from the others, none can or want to guess -- as well as treasures of a more conventional sort, including gold and silver coins, a silver ring carved with dolphins and a pair of leaded glass flasks containing dark watery liquid.