"Maybe we ought to leave town for a while." Molly said. "We could go to Oyster Bay or somewhere." Then she glanced up. "What's that noise?" Outside, I now noticed, mingled with the soughing of the wind, a susurrus of many voices. We went to the lab windows. A crowd of two or three hundred people was standing in the campus, staring up at the sky over us. "What are they looking at?" McGill asked. "No one can possibly know we're here." I started to lean out of the window, twisting up my head to see what it could be. "Don't do that, Alec! They'll see you!" McGill warned, and I pulled my head in. "Can we get on the roof?" I asked, but Molly suddenly said, "Look who's here." Three squad cars drove up and several policemen got out. "Perhaps we ought to sort of very gently turn the lights off," I suggested. Molly immediately snapped off the shaded bench lamp, which was all that was on in the lab. This left McGill's office light, and I started toward it. "Hadn't we better run for it?" Molly said, but a loud banging on the front door downstairs answered her. "I hope that damn lock doesn't give again!" McGill breathed. "They'll break it down!" Molly gasped. "Like hell. It's University property and they can't possibly have gotten a search warrant so quickly at this time of night." * * * * * From outside came a loud voice: "Alec Graham! Are you in there?" "Don't answer," said McGill. "And keep away from the windows. I guess they saw the light in my office." He leaned out. "What do you want?" he shouted. "This is the police. Open up!" "I won't unless you have a warrant!" There was no more shouting. They seemed to be parlaying among themselves, but the crowd had a menacing sound. A brilliant light suddenly hit our windows, illuminating the lab ceiling--a police searchlight. I saw that Molly had disappeared and I assumed she had gone into McGill's office. "These guys mean business," he said, "but what the hell brought them?" "Something on the roof. That's what they're all looking at, so why don't we go up and see?" "All right, but you'd better stay down here. There's no parapet and they'll see you." He started for the door and I decided to follow--at least as far as the trapdoor, or whatever gave onto the roof--when Molly came in from the hall. She looked scared. "My God! I climbed an iron ladder and took a look outside. There's a small cyclone over us--a ton of torn papers and dust and junk whirling around like a waterspout! They'd be able to see it for blocks!" "Oh, great," McGill groaned. "Now it's playing tricks with the wind. That's how they spotted us." "We've got to get out of here, McGill," said Molly. "Maybe the best thing would be for me to give myself up to the cops," I said.