human
Here's the entrance to the secret chamber all right, Dan exclaimed.
gpt
Let's see where it goes to. He climbed in and started up the winding flight of stairs, Tom close behind him. About half way up the height of the Oak Parlour he came to a door.
human
Can't go any farther,
gpt
What's the matter?
human
There's a door here; it leads, evidently, into some little room between the Oak Parlour and the bedroom next. Who would ever have guessed it?
gpt
Can't you open the door; is it locked?
human
No, he answered.
gpt
I've opened it. But it's pitch dark inside. Get a candle.