The longest smoke break of Nicholas White’s life began at around eleven o’clock on a Friday night in October, 1999. White, a thirty-four-year-old production manager at Business Week, working late on a special supplement, had just watched the Braves beat the Mets on a television in the office pantry. Now he wanted a cigarette. He told a colleague he’d be right back and, leaving behind his jacket, headed downstairs.

The magazine’s offices were on the forty-third floor of the McGraw-Hill Building, an unadorned tower added to Rockefeller Center in 1972. When White finished his cigarette, he returned to the lobby and, waved along by a janitor buffing the terrazzo floors, got into Car No. 30 and pressed the button marked 43. The car accelerated. It was an express elevator, with no stops below the thirty-ninth floor, and the building was deserted. But after a moment White felt a jolt. The lights went out and immediately flashed on again. And then the elevator stopped.