Somewhere in the dark and wet of the sewers, a bone creature clicks along a tunnel with all the busy purposefulness of a dog that has somewhere to be.

This is where the resemblence to a dog ends. The creature's body is a massive skull, complicated and radially symmetrical, turned upside down so that it is crowned with a ring of clenched and grinning teeth. Below these are a dozen eye sockets, each one bristling with a clutch of multi jointed and slender limbs. Some of these end in sharp breaks, too short to reach the concrete below, and so they drag along the walls instead, clattering and scraping as the creature hustles along.

It is busy. It has exploration to do. There are many new tunnels, and Metody does not know all of them yet, and this is a sad thing indeed.