👉 A deserted shop looks like an ordinary shop, but it has no shopkeeper and some of its wares are mimics.

A deserted shop is a GnollHack special room. It has a parquet or marble floor and is stocked like a randomly chosen kind of shop, but the merchandise includes mimics disguised as items:

A game has at most one deserted shop, on a level between 10 and 20 of the Dungeons of Doom, and that level gets no ordinary shop. Like a real shop, it is a room with exactly one door and no stairs. It is always unlit.