"No brandy for me," Charlock said. "I never touch the stuff. I shouldn't wonder if there was a bottle of sal volatile in that unfortunate maid's room. I understand that Hortense was hysterical and used to doctor herself with the remedy you speak of. I'll ring the bell and see."

A servant came in answer to the summons, but she stood hesitating as Charlock told her what he needed. She was a domestic of the country type, with vacant face and staring eyes. She shook her head stubbornly.

"I couldn't do it, sir," she said. "I wouldn't go into Hortense's room—no, not if you was to double my wages. It isn't safe, my mother always said, to go into the room of a suicide. It makes you feel that way yourself."

Charlock appeared to be on the verge of an explosion of temper, when Grey cut in. Expostulation was useless.

"Oh, never mind," he said. "Show me the room and I'll look for myself. Now come along. I won't even ask you to come inside. If you will point out the room to me——"

The round-eyed domestic accepted the compromise cheerfully. She piloted Grey up the stairs and indicated a room at the far end of the corridor. Then she retired precipitately, to Grey's great amusement. He knew that it was useless to argue with rustics of that sort. He entered the room and glanced around him.

The bedroom was comfortably furnished. There was a variety of pictures and knickknacks on the walls, and a book-shelf was laden with French novels. The maid had furnished her bedroom in imitation of a lady's boudoir. She was of luxurious habits, too, for a fire was laid in the grate and an attempt had been made to light it. Paper and sticks were charred away, but the coal had been obstinate and had refused to burn. A few letters had been torn up and thrown in the back of the fire, and these, for the most part, were charred and smoked until only a few words could be read. In a spirit of idle curiosity, Grey knelt down and examined these. He smiled to himself at his own weakness. Clearly he had caught this fever of investigation from his Italian friend. After a moment or two, however, his amused smile vanished, he grew deeply interested. A fragment of one of the letters was in his hand. He could make out a few words thereon, among which stood out prominently the expression "be cautious," and then, lower down, the still more significant words "the sundial."

There was nothing on the back of the paper, nothing more to indicate the writer's meaning. But, whoever the writer was, he had conveyed a warning to Hortense by means of his letter, and in some strange, inscrutable way that warning was mixed up with the old Roman sundial. No doubt the maid had torn up the letter and thrown it on the fire while the sticks were still burning, taking it for granted, of course, that the letter was destroyed.

"A lucky find," Grey murmured to himself. "There is more here than meets the eye. I shall have a fine story for Tanza. Still, it is one thing to know how a crime is committed and another to discover the perpetrator. I wonder if I can find a further clue—hallo!"

Grey almost started as he pulled from the grate a photograph which had been torn across the middle. He placed the two pieces together and examined them by the light of the window. There was a puzzled expression on his face as he looked at the photograph, which was that of two men dressed for some outdoor sport. One face was strange to him, but he recognised the other.