"Well, that's funny!" exclaimed Frank.

"Isn't it?" returned Page. "I got on to the thing wholly by accident. When I was hanging up some of the things there I stumbled and caught hold of that little projection for support.

"The thing turned in my hand, and the first thing I knew the door was open. It opened a little hard, showing that the thing hadn't been used for a long time."

"Didn't the owner of the house speak of it?"

"I don't think he knows anything about it."

"Have you told him?"

"Not much!"

"Why not?"

"Well, because it just struck me that such a place as this was a kind of a secret worth keeping. You can see for yourself that it was the evident intention of the person who set up this door that it should be a secret. The hinges are perfectly concealed, and it has been fitted in and the edges painted in such a way that only the closest inspection would give a fellow a suspicion that there was any opening there."

At this moment there was a knock, and Browning came in.