I neglected to mention that the wererat gives you its torch. This torch should be good for another 14 minutes or so.
Leaving the wererat behind (and I think we can all agree we know that's what it was), the party climbs a flight of stairs, which leads to a short hall, a half flight of stairs, a landing and another flight of stairs. You would be higher than the village now, so you would guess that you're under the hill. The wererat is covering your rear, so you have no reason to worry about guards chasing you. As well, given the sound of your own footsteps, you feel sure you'd hear them.
The torch has about 11 minutes remaining, or about 55 rounds.
At the top of the last stair, you find yourself at the end of a sloping hallway, one that climbs about thirty degrees upwards, like a mine drift. You see in the torchlight, about twenty feet ahead, a wolf spider ~ apparently minding its own business. The spread of its legs are as wide as the hall, about six feet. It is looking down at you.
I'm going to charge you 1 round on the torch every twenty words. You didn't leave your lantern on the horse, did you?