Monsieur Matthieu glanced at her once and then shrugged.

"Nothing, Madame. A lay figure is a lay figure."

"True," said Moira carelessly, but the Commissaire found himself regarding her with a new appraising eye. What did she mean by this question?

But she moved past him quickly as though with a definite purpose, and approached the north window.

"Which of these sashes was unlocked, Monsieur?"

"The one to the right, Madame."

"I see. You say it was closed but not fastened?"

"That is correct."

"That is strange."

"Why, Madame?"