bending over his friend, shook him gently by the shoulder. "Dan, Dan,
I say; wake up!"

"What's the matter?" exclaimed Dan with a start of alarm, as he sat
up in bed.

"Nothing, nothing; don't make a noise. I happened to be awake, and
hearing footsteps under the window, I got up and looked out. I saw some
one moving along close to the wall until he got to the bowling alley. He
opened the door and disappeared."

"The door's locked," exclaimed Dan. "Who was it?"

"He had a key, whoever he was then. To tell the truth, Dan, it looked
like the Marquis; though I couldn't swear to him. I certainly saw
some one."

"You have not been asleep and dreaming, have you?" asked his friend,
rubbing his eyes.

"I should say not. I'm going down to investigate; thought you'd like to
come along."

"So I shall," said Dan, jumping out of bed and beginning to dress. "If
you really have seen any one, I'll wager you are right in thinking it's
the old marquis. That is just the sort of thing I have imagined him
being up to. What he wants though in the old part of the house is more
than I can think. He has pestered me to get back there ever since I
showed him over the place the day he arrived. Are you ready? Bring a
candle, and some matches. Ill just take my gun along on general