"I mean," Miss Pembroke went on hastily, "that I have nothing to tell you other than I have already told. I did put the chain on and put out the lights last night at eleven o'clock. I did fasten all of the windows—all of them. Charlotte did unfasten some of the windows between seven and eight this morning; she did unchain and open the door at about eight o'clock. Those are all the facts I know of. I did not kill Uncle Robert, and, of course, Charlotte did not."
"How do you know Charlotte did not?" I asked.
"Only because the idea is absurd. Charlotte has been with us but a short time, and expected to leave soon, any way. My uncle had been cross to her, but not sufficiently so to make her desire to kill him. He never treated her like he treated me!"
The tone, even more than the words, betrayed a deep resentment of her uncle's treatment of her, and as I found I must put my questions very definitely to get any information whatever, I made myself say: "Did you, then, ever desire to kill him?"
Janet Pembroke looked straight at me, and as she spoke a growing look of horror came into her eyes.
"I have promised to be truthful," she said, "so I must tell you that there have been moments when I have felt the impulse to kill Uncle Robert; but it was merely a passing impulse, the result of my own almost uncontrollable temper. The thought always passed as quickly as it came, but since you ask, I must admit that several times it did come."
Laura threw her arms around Janet with a hearty caress, which I knew was meant as an atonement for the shadow of doubt she had recently felt.
"I knew it!" she exclaimed. "And it is your supersensitive honesty that makes you confess to that momentary impulse! Any one so instinctively truthful is incapable of more than a fleeting thought of such a wrong."
I think that at that moment I would have given half my fortune to feel as Laura did; but what Janet had said did not seem to me so utterly conclusive of her innocence. Indeed, I could not evade an impression that sudden and violent anger was often responsible for crime, and in case of a fit of anger intense enough to amount practically to insanity, might it not mean the involuntary and perhaps unremembered commission of a fatal deed? This, however, I immediately felt to be absurd. For, though a crime might be committed on the impulse of a sudden insanity of anger, it could not be done unconsciously. Therefore, if Janet Pembroke was guilty of her uncle's death, directly or indirectly, she was telling a deliberate falsehood; and if she was not guilty, then the case was a mystery that seemed insoluble. But insoluble it should not remain. I was determined to pluck the heart out of this mystery if it were in power of mortal man to do so. I would spare no effort, no trouble, no expense. And yet, like a flash, I foresaw that one of two things must inevitably happen: should I be able to prove Janet innocent, she should be triumphantly acquitted before the world; but if, on the contrary, there was proof to convince even me of her guilt, she must still be acquitted before the world! I was not so inexperienced in my profession as not to know just what this meant to myself and to my career, but I accepted the situation, and was willing, if need be, to take the consequences.
These thoughts had crowded upon me so thick and fast that I was unconscious of the long pause in the conversation, until I was recalled to myself by an instinctive knowledge that Janet was gazing at me. Meeting her eyes suddenly, I encountered a look that seemed to imply the very depths of sorrow, despair, and remorse.