“Yes, because she didn’t know she was taking it. When she ate the sandwich——”

“The poison wasn’t in the sandwich. She took that poison in water. The tumbler and spoon that were used are even now on the glass shelf in her bath-room.”

“You know this?”

“I know that in the glass that now stands there a chemist has found a slight trace of aconite. I took the glass myself to be tested, with that result. This is not a great discovery, it merely proves that the poison was administered in water, not in a sandwich.”

“But it also means that it was given to her by some one who could persuade her to take the solution, unquestioningly,—not under compulsion.”

“It would seem so.”

“And that points to Miss Stuart.”

“Not necessarily. Hardy, I refuse to discuss these things with you if you avow everything to condemn her. Why does what I have just told you point to Miss Stuart any more than any one else in the house? Why not Miss Frayne? Or Haviland?”

“Pshaw! Nobody suspects Gray Haviland.”

“But why not? If you’re merely suspecting here and there without definite reason, why not include him on your list? And here’s another thing. Whoever mixed that poison in the glass of water, afterward rinsed the glass and returned it to its place in the bath-room? This was either done at the time, that is, before the lady died, or later on, after death had ensued. In either case, it opens up a field of conjecture.”