Merrick had gleaned all this before he had been a day at the Regina. They were quite a happy family, and the Colonel speedily found himself at home. The Marquis welcomed him as if he owned the hotel, and as if everybody was his guest. The dance was a great success, as also were the presents in connection with the cotillon promoted by the Marquis.
At two o'clock the following morning the Marquis was entertaining a select party in the smoking-room. The ladies had all vanished by this time. The Marquis was speaking of his adventures. He really had quite a talent in that direction. Naturally, a man of his wealth was certain to be the mark for swindlers. Merrick listened with an approving smile. He knew that most of these stories were true, for they had all been recorded from time to time at Scotland Yard.
"You would have made an excellent detective, Marquis," he said. "You have made it quite clear where the police blundered over that Glasgow tragedy. I suppose you read all about the Grand Coast Railway murder."
The Marquis started ever so slightly. There was a questioning look in his eyes.
"Did you?" he said. "Naturally one would, Colonel. But a matter the most inexplicable. I gave him up. From the very first I gave him up. If the guard Catesby was not the guilty person, then I admit I have no theory."
One by one, the smoking-room company faded away. Presently only Merrick and the Marquis remained, save one guest who had fallen asleep in his chair. A sleepy waiter looked in and vanished again. The hotel was absolutely quiet now. Merrick, however, was wide awake enough; so, apparently, was the Marquis. All the same, he yawned ostentatiously.
"Let us to bed," he said. "To-morrow, perhaps——"
"No," Merrick said somewhat curtly. "I prefer to-night. Sit down."
The last two words came crisply and with a ring of command in them. The Marquis bowed as he dropped into a chair and lighted a fresh cigarette. A little red spot glowed on either of his brown cheeks, his eyes glittered.
"You want to speak to me, Colonel?" he said.