It all begins on a Monday, when four people board an elevator in a Manhattan office tower. Each presses a button for their floor, but the elevator proceeds, nonstop, to the top. Once there it pauses for a few seconds, but the doors don't open. Instead, the elevator begins to descend floor-by-floor. Then it plummets. Right to the bottom of the shaft. It appears to be a random accident... But on Tuesday, it happens again, in a different Manhattan skyscraper. And then Wednesday brings yet another tragic high-rise catastrophe. In only three days, one of the most vertical cities in the world--and the nation's capital of media, finance and entertainment--is plunged into chaos. Clearly, this is anything but random. This is a cold, calculated bid to terrorize the city. And it's succeeding. Fearing for their lives, thousands of men and women working in offices across the city refuse to leave their homes. Commerce has slowed to a trickle. Emergency calls to the top floors of apartment towers go unanswered. Who is behind this? Why are they doing it? Are these deadly acts of sabotage somehow connected to a fingerless body found on the High Line? Two seasoned New York detectives and a straight-shooting journalist race against time to uncover the truth before the city's newest, and tallest, residential tower has its ribbon-cutting on Friday night.