[TWENTY]

Westervelt watched them walk up the hall. He thought of going back into the laboratory to find the open window. In his mind, he could see the straight, twenty-five story drop down the side of the dark tower to the roof of the larger part of the building.

He recalled having looked down once or twice. The people down there had paved patios outside their offices. A hurtling body would....

He shook the thought out of his head and hurried to catch up to Parrish and the two girls.

They trouped into the main office and took turns in telling Smith the story. He flatly refused to believe it for about five minutes. Ultimately convinced, he told Pauline to check Rosenkrantz by phone every ten minutes.

"If we're wrong," he said, "it's unfair to have him sitting down there all alone. Bob might somehow have outsmarted us, but if he did it to this extent, it means he isn't safe on the loose!"

Westervelt noticed that Simonetta was looking pale. He wondered about his own features. The eye would probably stand out very picturesquely.

"I don't believe it," he said when the others had all fallen silent.

They looked at him, hoping to be convinced.

"He isn't that kind," said Westervelt. "All right, you tell me he had a hard time in space and it left him a little off; but this doesn't sound like the direction he would go off in."