“Do you not understand?” she said in a low, intense tone. “He is Elijah Lane, the father of the boy. An evil, wicked man—mad—truly mad. He would kill the boy. He killed the mother of the boy. I know, but it is not a case for proof—not a case that the law can touch. And he hates the boy—and me!”

I began to grasp the truth, and recovered speech.

“But why does he want to kill him? And would not the law punish the crime?”

“You do not understand. The boy inherits a great fortune from his mother. Mr. Knapp and I are left trustees by the mother's will. If he had control of the boy, the boy would die; but it would be from cruelty, disease, neglect. It would not be murder in the eye of the law. But I know what would happen. Oh, see the wretch! How he hates me!”

I was stunned with the words I had heard. They made much plain that had puzzled me, yet they left much more in darkness; and I looked blankly at the figure on the other tug. It was truly a strange sight. The man was beside himself with rage, shouting, gesticulating and leaping about the deck in transports of passion. He showed every mark of a maniac.

Suddenly he drew a revolver and sent shot after shot in our direction. We were far beyond the reach of a pistol bullet, but Mrs. Knapp screamed and dodged.

“How he hates me!” she cried again.

When the last shot was gone from his revolver the man flung the weapon in frenzy, as though he could hope to strike us thus.

Then a strange thing happened. Whether due to the effort he had made in the throw, or to a lurch of the tug in the waves we left behind us, or to a stumble over some obstruction, I could not say. But we saw the man suddenly pitch forward over the low bulwarks of the tug into the waters of the bay.

Mrs. Knapp gave a scream and covered her eyes.