“Then for four hours the despatch-box had lain unguarded?”

“No one is ever permitted to enter that room save the housemaid in the morning, and my valet, or my wife’s maid, during the rest of the day. They are both trusty servants who have been with us for some time. Besides, neither of them could possibly have known that there was anything more valuable than the ordinary departmental papers in my despatch-box.”

“Who did know of the existence of that letter?”

“No one in the house.”

“Surely your wife knew?”

“No, sir. I had said nothing to my wife until I missed the paper this morning.”

The Premier nodded approvingly.