his cleverness. One must be on one's guard against first impressions, Mary."
"No, no one mustn't, when they're so pleasant. There is nothing small or peddling about him. It was angelic of such an old man to take so much trouble."
Henry Lennox reminded them of practical considerations.
"The first thing is to get the room opened for him. He is going to see Uncle Walter at eleven o'clock, and he'll want to visit the Grey Room afterwards. If we get Chubb and a man or two from the village the first thing in the morning, they can help Caunter to open the room and have it ready for him after lunch."
Sir Walter rang and directed that workmen should be sent for at the earliest hour next day.
"I feel doubtful as to what the authorities would say, however," he told Henry, when his orders had been taken.
"What can they say, but be well pleased if the infernal thing is cleared up?"
"It is too good to be true."
"So I should think, but I share Mary's optimism. I honestly believe that Signor Mannetti knows a great deal more about the Grey Room than he has let us imagine."
"How can he possibly do that?" asked his uncle.
"Time will show; but I'm going to back him."
At eleven o'clock on the following morning the visitor appeared. He walked with a gold-headed, ebony cane and dressed in a fashion of earlier
