First, you have to get out of the fire. The ladder nearby leads to the crypt --
-- but the grate is now locked, so that's no go. Go back the other way to the cellar and see if there's a way out there.
And now you have to make a decision -- risk your life to save others, or save yourself and let them die. You know what Nancy would do --
-- but you're not Nancy, and you can do as you like.
So risk your life to save the others, or don't. There are three possible endings to the game depending on your decision.
What are the possible endings? (Caution -- Spoilers!)