"I'm going to show you this thing as I see it, Mr. Hardy," said Stone. "I frankly admit it's all theory, I haven't a particle of human testimony to back it, but it seems to me the _only_ solution that will fit all points of the mystery. And I shall ask you to consider it confidential for the present, until I can corroborate it by unmistakable proofs." Hardy nodded assent, his eyes fixed on the speaker in a sort of fascination. This young detective had not been at all idle of late, but his work had amounted to nothing definite, and though he was himself convinced that Pauline Stuart was responsible for her aunt's death, he seldom exploited that view before Stone, having learned that it was an unwelcome subject. "Here's the theory in a very small nutshell," said Stone, "but remember, you're not to mention it to any one until I give you permission. Miss Lucy Carrington took that powder, thinking it a drug that would make her beautiful." "A charm? a philter?" Hardy's eyes seemed to bulge in his excitement. "I'm not sure whether it was a fake magic affair, say, from a clairvoyant or fortune-teller, or whether it was a plain swindle from a beauty doctor or something of that sort. You know such people play on the credulity of rich patrons and get enormous sums and a promise of secrecy for a so-called beauty producer." "But why would the beauty doctor or the clairvoyant person give a patient poison?" "They didn't. They gave a harmless powder, and some evil-minded person added the aconite, secretly, knowing of the beauty scheme." "Who did it?" "That's yet to be discovered, but it will be easier if we can trace the one who sold her the nostrum. Now, listen while I reconstruct the scene. Miss Carrington, having dismissed her maid, goes to her bath-room, and takes the powder dissolved in water. These powder papers, which I found in her bath-room waste-basket, carry out that idea." Hardy stared at the papers, but did not interrupt the speaker. "Then, joyfully waiting the effect of the charm, she sits in front of the mirror to watch her features become beautiful. This is why she said to her own reflection, 'To-morrow I shall be freed forever from this homely face!' She gazed at the picture of Cleopatra above her dressing-table, and said 'Yours is the most beautiful face I have ever seen. I wish mine were as beautiful.' The remarks concerning Count Charlier were addressed to the glove which she held in her hand, a sentimental part of the whole performance." "Mighty interesting, Mr. Stone, but pretty fantastic, so far."