Her countenance, though troubled and drawn with anxiety, was so pure and sweet that I felt sure of her innocence. But it should be my work to prove that to the world.

Suddenly her eyes flashed open; again her mood had changed.

“Mr. Burroughs,” she said, and there was almost a challenge in her tone, “why do you ask me these things? You are a detective, you are here to find out for yourself, not to ask others to find out. I am innocent of my uncle's death, of course, but when you cast suspicion on the man to whom I am betrothed, you cannot expect me to help you confirm that suspicion. You have made me think by your remark about a man on a late train that you refer to Mr. Hall. Do you?”

This was a change of base, indeed. I was being questioned instead of doing the catechising myself. Very well; if it were my lady's will to challenge me, I would meet her on her own ground.

“You took the hint very quickly,” I said. “Had you thought of such a possibility before?”

“No, nor do I now. I will not.” Again she was the offended queen. “But since you have breathed the suggestion, you may not count on any help from me.”

“Could you have helped me otherwise?” I said, detaining her as she swept by.

To this she made no answer, but again her face wore a troubled expression, and as she went slowly from the room, she left me with a strong conviction that she knew far more about Gregory Hall's connection with the matter than she had told me.

I sat alone for a few moments wondering what I had better do next.

I had about decided to go in search of Parmalee, and talk things over with him, but I thought it would be better to see Louis first, and settle up the matter of his rose more definitely. Accordingly I rang the bell, and when the parlor maid answered it, I asked her to send both Louis and Elsa to me in the library.