night of anxiety awaits you. Indeed, if I am not mistaken, it will be possible for us all to sleep very soundly, though we may go to bed rather late. But I think we must be prepared not to retire till after two o'clock. I will enter upon my watch at eight—in half an hour. The door shall be left open, as you wish. But I beg that none will approach the east end of the corridor. That is only fair. I will, however, permit Mr. Lennox to station himself on the top of the great staircase, and from time to time he may challenge me. He shall say 'Is all well?' and be sure I shall answer 'All is well.' Could anything be more satisfactory?"
Signor Mannetti ate sparingly, then he donned a big, fur, motor-coat and declared himself ready. They thought he had forgotten Prince, but he insisted upon the company of the ancient spaniel. The dog had fed, and he could sleep as well in one place as another.
"Fear not," said the Italian. "I shall be considerate to your ancient pet. I do not beg his aid without reason. He is on my side and will help me if he can—infirm though he be. I have made friends with him. Set him at my feet. I will sit here under the electric light and read my Italian papers."
Thus once again a solitary occupied the Grey Room and measured his intelligence against the terrible forces therein concealed. Signor Mannetti took leave of them cheerfully at eight o'clock, and while Sir Walter and Mary descended to the library, Henry took up his station at the head of
