"So far so good," he murmured as he rejoined us. He weighed the atom-pistol familiarly in his hand. "Now, if only Elson out there comes through all right--Come on, let's see where Marnick is. Not too far from the house, I hope. And remember, all of you, this is strictly my party; so no interference." Those last words struck an ominous note in me, but I said nothing, nor did the others as we followed McGowan along to the far corner of the house. There we could see the long, dim rectangle of light from the room streaming out onto the barren rock. Marnick was not in sight but we knew he must be somewhere very near, waiting in the darkness, watching for whoever had set off that alarm. * * * * * Seemingly, for a long while we waited, but it couldn't have been more than a minute; we crowded close to each other, staring, trying to accustom our eyes to the night. Then McGowan pointed, and we saw a darker shape very near the house, and we knew it was Marnick, waiting. Again that curious feeling of impending drama overwhelmed me, and I wanted to act to prevent something, but I didn't know how--or what-- McGowan's gesture shifted imperiously, and we saw another vague blur of a figure out there and we knew it was Elson. McGowan, in that moment, reminded me of a stage director, proud of his work and trying to impress its subtleties upon us. My gaze went back to the slouching figure of Elson, and I realized he was moving toward us. Marnick saw him at the same time. Marnick straightened up, leaned tautly forward and seemed to be peering. Then Marnick's hated voice came stabbing through the darkness to us, but not directed at us: "I see you out there. Whoever you are, it was foolish of you to try to come near my house, for you have set off a detector beam. Stop immediately or I will blast you. I have an atom-pistol trained on you at this moment." For a single instant everything seemed to stand still. Elson stood still. McGowan, close beside me, caught his breath sharply in his throat. Then Elson moved forward again, and McGowan breathed a slow sigh of relief. "Good," he murmured in my ear, though I am sure he was not conscious that I was there. "I knew Elson would obey me. Elson obeys me in everything." And then: "Poor Elson." In that sudden moment I realized what was going to happen; I knew McGowan had planned this step by step from start to finish, and I knew _Elson was going to die_! I started forward with a cry in my throat, but McGowan's hand clamped roughly over my mouth and his fingers dug cruelly into my arm. I could see, though, and I saw Elson come forward in his slouching, ungainly gait, arms dangling at his side and an idiotic grin on his face. I heard Marnick's warning once more, and I saw the almost invisible beam of his atom-pistol slashing the darkness. I saw Elson stumble and plough forward on his face and lay still. And not until then did McGowan release me.