“For over a year I have been engaged in the construction of a gigantic rocket on Guadalupe Island, off the west coast of Lower California. The Mexican government has given me every assistance, and today everything is complete to the last detail. I am ready to start at any moment.” As he ceased speaking, he suddenly faded from view. The chair in which he had been sitting was empty. There was no one in the room but myself. I was stunned, almost terrified. I recalled what Rothmund had said about the effect of the narcotics upon my mentality. I also recalled that insane people seldom realize that they are insane. Was _I_ insane! Cold sweat broke out upon my forehead and the backs of my hands. I reached toward the buzzer to summon Ralph. There is no question but that Ralph is sane. If he had seen Carson Napier and shown him into my study—what a relief that would be! But before my finger touched the button Ralph entered the room. There was a puzzled expression on his face. “Mr. Napier is back again,” he said, and then he added, “I didn’t know he had left. I just heard him talking to you.” I breathed a sigh of relief as I wiped the perspiration from my face and hands; if I was crazy, so was Ralph. “Bring him in,” I said, “and this time you stay here.” When Napier entered there was a questioning look in his eyes. “Do you fully grasp the situation as far as I have explained it?” he asked, as though he had not been out of the room at all. “Yes, but—” I started. “Wait, please,” he requested. “I know what you are going to say, but let me apologize first and explain. I have not been here before. That was my final test. If you are confident that you saw me and talked to me and can recall what I said to you as I sat outside in my car, then you and I can communicate just as freely and easily when I am on Mars.” “But,” interjected Rothmund, “you _were_ here. Didn’t I shake hands with you when you came in, and talk to you?” “You thought you did,” replied Napier. “Who’s loony now?” I inquired inelegantly, but to this day Rothmund insists that we played a trick on him. “How do you know he’s here now, then?” he asked. “I don’t,” I admitted. “I am, this time,” laughed Napier. “Let’s see; how far had I gotten?” “You were saying that you were all ready to start, had your rocket set up on Guadalupe Island,” I reminded him. “Right! I see you got it all. Now, as briefly as possible, I’ll outline what I hope you will find it possible to do for me. I have come to you for several reasons, the more important of which are your interest in Mars, your profession (the results of my experiment must be recorded by an experienced writer), and your reputation for integrity—I have taken the liberty of investigating you most thoroughly. I wish you to record and publish the messages you receive from me and to administer my estate during my absence.” “I shall be glad to do the former, but I hesitate to accept the responsibility of the latter assignment,” I demurred.