"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.