The Citadel of Chaos

The key turns, the lock clicks open and you look inside the box.
Inside the box is a glass jar, and in this jar is a spider.
But not a normal spider; this creature has the face of an old man.
He is talking to you, but you cannot make out what he is saying.
A noise startles you and you spin round to see that the door,
the one you came through, is beginning to open.
You put the jar in your bag and make for the other door.

You press on.