His heart gave a sudden leap, and he cast a covert glance towards his wife. She was deep in a new novel.

Without a word, Sheard went to the door, and walking down to the gate, bought a paper. The late news was very brief.

BRITISH MUSEUM MYSTERY

"An incredibly mysterious burglary was carried out last night at the British Museum. By some means at present unexplained the Head of Cæsar has been removed from its pedestal and stolen, and the world-famous Hamilton Vase (valued at £30,000) is also missing. The burglar has left no trace behind him, but as we go to press the police report an important clue."

Sheard returned to the house.

Seated in his study with the newspaper and Séverac Bablon's letter before him, he strove to arrange his ideas in order, to settle upon a plan of action—to understand.

That the "important clue" would lead to the apprehension of the real culprit he did not believe for a moment. Séverac Bablon, unless Sheard were greatly mistaken, stood beyond the reach of the police measures. But what was the meaning of this crass misuse of his mysterious power? How could it be reconciled with his assurances of the previous night? Finally, what was the meaning of his letter?

He wished him to interview Sir Leopold Jesson, for some obscure reason. So much was evident. But by what right did he impose that task upon him? Sheard was nonplussed, and had all but decided not to go, when the closing lines of the letter again caught his eye. "Although Brugsch's book is elementary, there is something more behind it——"

A sudden idea came into his head, an unpleasant idea, and with it, a memory.

His visitor of the night before had brought a mysterious bag (which Sheard first had observed in his hand as they fled from the Museum) into the house with him. It was evidently heavy; but to questions regarding it he had shaken his head, smilingly replying that he would know in good time why it called for such special attention. He remembered, too, that the midnight caller carried it when he departed, for he had rested it upon the gravel path whilst bidding him good-night.