"Yes, it's plain as daylight," said M. Formery "The burglars came in by this window, and they went out by it."
He crossed the room to a tall safe which stood before the unused door. The safe was covered with velvet, and velvet curtains hung before its door. He drew the curtains, and tried the handle of the door of the safe. It did not turn; the safe was locked.
"As far as I can see, they haven't touched this," said M. Formery.
"Thank goodness for that," said the Duke. "I believe, or at least my fiancée does, that M. Gournay-Martin keeps the most precious thing in his collection in that safe—the coronet."
"What! the famous coronet of the Princesse de Lamballe?" said M. Formery.
"Yes," said the Duke.
"But according to your report, inspector, the letter signed 'Lupin' announced that he was going to steal the coronet also."
"It did—in so many words," said the Duke.
"Well, here is a further proof that we're not dealing with Lupin. That rascal would certainly have put his threat into execution, M. Formery," said the inspector.
"Who's in charge of the house?" said M. Formery.
