As he turned down Spring Street towards Sussex Square, Purdie hastily reviewed his knowledge of Mr. Spencer Levendale and his family. He had met them, only two months previously, at a remote and out-of-the-way place in the Highlands, in a hotel where he and they were almost the only guests. Under such circumstances, strangers are soon drawn together, and as Levendale and Purdie had a common interest in fishing they were quickly on good terms. But Purdie was thinking now as he made his way towards Levendale's London house that he really knew very little of this man who was evidently mixed up in some way with the mystery into which young Andie Lauriston had so unfortunately also become intermingled. He knew that Levendale was undoubtedly a very wealthy man: there were all the signs of wealth about him; he had brought several servants down to the Highlands with him: money appeared to be plentiful with him as pebbles are on a beach. Purdie learnt bit by bit that Levendale had made a great fortune in South Africa, that he had come home to England and gone into Parliament; that he was a widower and the father of two little girls--he learnt, too, that the children's governess, Miss Elsie Bennett, a pretty and taking girl of twenty-two or three, had come with them from Cape Town. But of Levendale's real character and self he knew no more than could be gained from holiday acquaintance. Certain circumstances told him by Melky about the rare book left in old Multenius's parlour inclined Purdie to be somewhat suspicious that Levendale was concealing something which he knew about that affair--and now here was Miss Bennett writing what, on the face of it, looked like an appealing letter to him, as if something had happened. Purdie knew something had happened as soon as he was admitted to the house. Levendale's butler, who had accompanied his master to the Highlands, and had recognized Purdie on his calling the previous day, came hurrying to him in the hall, as soon as the footman opened the door. "You haven't seen Mr. Levendale since you were here yesterday, sir?" he asked, in a low, anxious voice. "Seen Mr. Levendale? No!" answered Purdie. "Why--what do you mean?" The butler looked round at a couple of footmen who hung about the door. "Don't want to make any fuss about it, Mr. Purdie," he whispered, "though it's pretty well known in the house already. The fact is, sir, Mr. Levendale's missing!" "Missing?" exclaimed Purdie. "Since when?"