They had reached the second of the bridge's three spans. Below them in the darkness the yellow flood poured in noisy volume. As Langham knew, here the stream was at its deepest and its current the swiftest. He knew also that his chance had come; but he dared not make use of it. The breath whistled from his lips and the moisture came from every pore. He sought frantically to nerve himself for the supreme moment; but suppose he slipped, or suppose Joe became aware of his purpose one second too soon!
"Keep over a bit, boss!" said the handy-man suddenly. "You are crowding me off the bridge!"
"Oh, all right; is that better?"
And Langham moved a step aside.
"A whole lot," responded Joe gruffly. But his little blue eyes, alert with cunning, were never withdrawn from the lawyer for an instant.
They walked forward in silence for a moment or two, and were approaching the end of the center span, when the lawyer glanced about him wildly; he realized that he was letting slip his one great opportunity. Again Joe spoke:
"Keep over, boss!" And then all in the same breath, "What the hell are you up to, anyway?"
It must be now or it would be never; and Langham, turning swiftly, hurled himself on his companion, and his slim fingers with their death-like chill gripped Joe's hairy throat. In the suddenness of the attack he was forced toward the edge of the bridge. The rush of the noisy waters sounded with fearful distinctness in his ears.
"Here, damn you, let go!" panted Montgomery.