I was surprised to see that little bit of humor in the story. I will go with everyone else north.
Like to take credit for that but it was in the book.
You run north, slipping once on the slick cobble stones. The wooden barrier is short and smooth, you see an open street beyond it - if he climbed that wall, he's lost in the crowd by now ...
Then you notice that, under the trash you are standing in is a source of warm air - and steam is rising upwards. A trap-door!
It takes some work to brush away the trash; the cold wind seems insistent on keeping it piles against the wall. The latch to the trapdoor is open, and it looks like your quarry made it into the sewers! You pry it open and take a look.
An Iron ladder, rusted and old leads down a narrow tunnel, which looks dry, The sound of retreating footsteps can be heard, and you quickly descend to follow.
You open your belt-pouch and withdraw one of your magic coins (coins enchanted with a light spell are a tried-and-hackneyed dungeoneers' tradition of many centuries, and Patricia gets the spell refreshed every few weeks).
You've come to a square chamber, a small room with the roof only a foot or so above your head - a human would have to crouch of kneel, here. Earlier in the tunnels, you had gained dim light from openings in the ceilings, but here the darkness is total. You'll need the coin in hand from know on. You look around you, and see many exists many so small only a rat could travel them!
You are about to head for one of the halfling sized ones, when you hear the sound of running foot steps down the largest. You can not tell if they are running towards you or away.
Do we pursue the sound?(28) or continue on our way?(43)
Pursue the sound and hope that we do not end up getting ambushed by his buddies.
You climb into the large tunnel and begin to run down it. It is long, straight and dark, and your coins light seems unable to penetrate the gloom. You are certain, however, that the footsteps came from this direction.
You pause to listen, and the footfalls are still there. They're walking now, not running. You think for a moment of calling out a "Hello?" but decide it would be foolish. You creep ahead, certain that the sound is nearby.
As you grow closer, it seems that there is more then one set of footsteps, and some are scraping along in rather unpleasant manner. You try to look beyond your source of light, nut you see nothing. The flow of air tells you that there is another chamber just a few feet in front of you, and you no longer hear the footsteps. In fact you hear breathing ...
Now do we enter the room and shine our coin light on what ever it is?(63) or do we go back and take the other route?(43) Ponders are we men or mice?
I think it is a bit late to head back, if we hear breathing then they are right on 'top' of us. Enter the room.