Kalkstein, Master of Alchemy
Later, once the advertised service has been rendered, the plaque merely reads, "Kalkstein, Master of Alchemy".
The interior is quite spartan. On the main floor are his living quarters, complete with several containers full of good stuff, and a nicely potted wolf's aloe. The basement, however, is where the real action is. There you will find his laboratory, not to mention a couple of chests, a wardrobe and, in Chapter III, a teleporter.