by Neil Gaiman
This is a fun story giving unexpected insights into the character and history of the Marquis de Carabas - however, if you don't already know who that is, you will miss a great deal and should probably read Neverwhere, first.
How the Marquis Got His Coat Back by Neil Gaiman This is a sort of companion story to Neverwhere, so it's written in Gaiman's best fairytale voice and is enchanting every step of the way. We briefly meet a few denizens of the world under London where Neverwhere takes place; enough to get the feel ...