He turned into the corridor that led to Mrs.Peyton's boudoir.

As he knew that it was locked, he was surprised to see by the dim light of the hanging lamp that a duplicate key to the one in his desk was in the lock.

It must be Susy's, and the young girl had probably taken refuge there.

He knocked gently.

There was a rustle in the room and the sound of a chair being moved, but no reply.
Impelled by a sudden instinct he opened the door, and was met by a cool current of air from some open window.