He had made himself master of the plans of the chateau and the pavilion.

So that, one afternoon, while Monsieur and Mademoiselle Stangerson were out for a walk, and while Daddy Jacques was away, he entered the latter by the vestibule window.

He was alone, and, being in no hurry, he began examining the furniture.

One of the pieces, resembling a safe, had a very small keyhole.

That interested him! He had with him the little key with the brass head, and, associating one with the other, he tried the key in the lock.