Sir James felt for his own match-box, but Hewitt had gone, and was lighting his cigar with a match from a box handed him by the groom. A smart little terrier was trotting about by the coach-house, and Hewitt stooped to rub its head. Then he made some observation about the dog, which enlisted the groom's interest, and was soon absorbed in a chat with the man. Sir James, waiting a little way off, tapped the stones rather impatiently with his foot, and presently moved away.

For full a quarter of an hour Hewitt chatted with the groom, and when at last he came away and overtook Sir James, that gentleman was about re-entering the house.

"I beg your pardon, Sir James," Hewitt said, "for leaving you in that unceremonious fashion to talk to your groom, but a dog, Sir James—a good dog—will draw me anywhere."

"HEWITT CHATTED WITH THE GROOM."

"Oh," replied Sir James, shortly.

"There is one other thing," Hewitt went on, disregarding the other's curtness, "that I should like to know: There are two windows directly below that of the room occupied yesterday by Mrs. Cazenove—one on each floor. What rooms do they light?"

"That on the ground floor is the morning-room; the other is Mr. Lloyd's—my secretary. A sort of study or sitting-room."

"Now, you will see at once, Sir James," Hewitt pursued, with an affable determination to win the baronet back to good humour, "you will see at once that if a ladder had been used in Mrs. Heath's case, anybody looking from either of these rooms would have seen it."

"Of course. The Scotland Yard man questioned everybody as to that, but nobody seemed to have been in either of the rooms when the thing occurred; at any rate, nobody saw anything."