 A newspaper publisher gets onto the express elevator on the way to his 12th-floor office. But when the elevator, a new model with push buttons for each floor (the operator pushed the top-floor button) gets to the top floor, the publisher is nowhere to be found. The elevator closes and goes down. To the horror of staffers on two lower floors, the elevator opens at each floor to reveal the publisher, who s dead from a gunshot wound. The publisher himself had pushed the buttons for the two floors before he died, implicating someone -- but who?