Leo had come home at last. He was a sad looking midget when I got there. Obviously no sleep, unshaven, deep hollows under his eyes. "I figured you'd be waiting for me, Lieutenant, but you know what?" he demanded. "I don't give a damn! I kept waiting for them to figure out the answer to these accidents and string me up. How come you didn't tell anybody?" I said, "Shut up and let's go inside." Sure, I figured the i-Gun was the cause, but the last thing I wanted was for Leo to get strung up before I laid my hands on that other device--the one that wouldn't work. I wanted that rig and all the plans and formulae, and Leo undoubtedly had them hidden deeper than Fort Knox. He unlocked the door, and I told the others to wait outside. We went into the hall and closed the door behind us. "So your little toy was harmless?" I said, grabbing him by his wrinkled lapels. "So it just shoots stuff off into another dimension?" He stared at me, his eyes half glazed. "I don't--know. That's what the notes said." He sank into a chair. "I guess it doesn't, though. It must ball up the metal object and shoot it out--infinite velocity--reduced in size--infinite mass--infinite inertia--keeps circling the globe like--like a satellite. Goes right through anything it hits. Goes on and on. Forever. Little bullets. Right through steel. Right through flesh and bones--" "Simmer down," I said. "You've been reading the papers. I've been checking the facts." "What do you mean?" "That you were right the first time. It does shoot metal objects into another dimension. But _they don't stay there_. They ooze back. Slowly. Real slow, so the first edge or corner that sticks back into our dimension is only a few millionths of an inch thick. Then a few ten-thousandths, then a few thousandths--and that's about the time they start making holes in people and objects _that run into them_." "Run into them?" "Certainly. There are no holes in buildings or other stationary objects. The holes are all horizontal. Now look, Baxter, our only chance is to work on that other device and your brother's notes, and maybe we can develop an extractor of some kind." "No. No, you don't understand," he said shaking his head like a sleep-walker. "It balls up the metal. Shoots it out. Infinite mass. Infinite veloc--" "Knock off that nonsense, and tell me where those plans are." "Trying to steal my brother's other invention, are you? It's not patented yet. You know that, don't you? Couldn't patent it because I can't make it work yet. You're smart, but you won't get it from me--" I had a fair hold on him, but the pure insanity that flared in his eyes shocked me for just the instant it took him to wrench out of my hands. He stumbled to the door of the study and burst through it heading for the window. I didn't hurry after him too fast, because I knew the boys outside would take him.