"I am Mrs. Engledew," she said. "I live in the Herapath Flats. I don't suppose you ever heard of me, Miss Wynne, but I knew your uncle very well--we had been acquaintances, nay, friends, for years. I thought it might be necessary to prove my _bona fides_," she continued, with a laugh, "so I brought some letters of Jacob Herapath's with me--letters written to me--you recognize his big, bold hand, of course." There was no mistaking Jacob Herapath's writing, and the two young people, after one glance at it, exchanged glances with each other. "Now you want to know why I am here," said Mrs. Engledew. "The answer is plain--if astonishing. I have managed to get mixed up in this matter of Jacob Herapath's murder! That sounds odd, doesn't it?--nevertheless, it's true. But we can't go into that now. And I cannot do more than tell you that I simply bring a message and want an answer. My dear!" she continued, laying a hand on Peggie's arm, "you do not wish to see Barthorpe Herapath hanged?" "We believe him innocent," replied Peggie. "Quite so--he is innocent--of murder, anyway," said Mrs. Engledew. "Now--I speak in absolute confidence, remember!--there are two men who know who the real murderer is. They are in touch with me--that is, one of them is, on behalf of both. I am really here as their emissary. They are prepared to give you and the police full particulars about the murder--for a price." Selwood felt himself grow more suspicious than ever. This lady was of charming address, pleasant smile, and apparently candid manners, but--price!--price for telling the truth in a case like this! "What price?" he asked. "Their price is ten thousand pounds--cash," answered Mrs. Engledew, with a little shrug of her shoulders. "Seems a great deal, doesn't it? But that is their price. They will not be moved from it. If Miss Wynne will agree to pay that sum, they will at once not only give their evidence as to the real murderer of Jacob Herapath, but they will point him out." "When?" demanded Selwood. "Tonight!" replied Mrs. Engledew. "Tonight--at an hour to be fixed after your agreement to their terms." Selwood felt himself in a difficult position. Mr. Tertius was out of town for the day, gone to visit an antiquarian friend in Berkshire: Mr. Halfpenny lived away down amongst the Surrey hills. Still, there was Cox-Raythwaite to turn to. But it seemed as if the lady desired an immediate answer. "You know these men?" he asked. "One only, who represents both," answered Mrs. Engledew. "Why not point him out to the police, and let them deal with them?" suggested Selwood. "They would get his evidence out of him without any question of price!"