A New York real estate tycoon plunges to his death on a Manhattan sidewalk. A trophy wife with a past survives a narrow escape from a brazen attack. Mobsters and moguls with no shortage of reasons to kill trot out their alibis. And then, in the suffocating grip of a record heat wave, comes another shocking murder and a sharp turn in a tense journey into the dirty little secrets of the wealthy. Secrets that prove to be fatal. Secrets that lay hidden in the dark until one NYPD detective shines a light.