Every weekday morning, as the sun rose above Sixth Avenue, a peerless crop of women-frames poised, behavior polished, networks connected, and bodies generally buffed to a high sheen-were herded by the cattle prod of their own ambition to one particular building. They're smart, stylish, and sophisticated, even the one found dead in her office.

When stylish Hillary Whitney dies alone in a locked, windowless conference room at the offices of RAGE...