Christmas fragment for Snorkack_catcher

Here's another Christmas fic, or rather a fragment. At the moment it's more of a bunny looking for a plot, but I have a few ideas.... It is, at any rate, Third Doctor; in fact, it's a Who/ Potter crossover.

Title: Alastor Moody and the Fury in the Dark
Characters: Moody, the Doctor, Lethbridge-Stewart, Liz Shaw.
Gen.

( The irresistable force meets the immovable object )