As he was thinking he was examining the picture to which Casimir had called attention. He now said: “No, I think not; I’m sure my ‘Woman with the Earrings’ antedates it.” Again the glass covering of a picture betrayed Casimir; Grafton saw a look of relief in his face. “He knew he’d made a break,” thought Grafton, “and now he hopes I didn’t notice it.”

After a few minutes Grafton said he must be going. Casimir’s face was as unreadable as his own; no one could have suspected from looking at either that both were determined to meet again. Grafton thanked Casimir heartily and turned away.

“Do you stay long here?” asked Casimir.

“A day or two, perhaps,” replied Grafton. “My plans are unsettled.”

“To-morrow is a closed day. But if you return, I shall be glad to show you the rest of the collection.”

Grafton knew he had scored. “You are very kind,” he said.

“It is possible that I may be able to show you through His Royal Highness’s apartments. There are several remarkable pictures—a Leonardo, a few Van Dycks, and some interesting moderns.”

“That would be delightful.”

“Then it is agreed?”

“If I can arrange it. At what hour?”