CHAPTER XXI.

ANOTHER LIGHT-RAY! The news that Mercer and Anina had been left in the Twilight Country completely dumfounded Miela and me. "Something was wrong," Mercer had said. And then they had insisted on staying there, and had sent the girls back to tell me to come over. We could make nothing of it, nor did the half hour of argument into which we immediately plunged further enlighten us. That flaw in our plans which had dawned on Mercer so suddenly and clearly certainly never occurred to us, for all it was seemingly so obvio…