She is a Broadway dancer, exquisite and mercurial. He is a dedicated psychiatrist, happily married to a beautiful woman, the father of two lovely children vacationing with their mother on Martha's Vineyard. 'Good morning, sir,' she said, as she passed David Chapman on a sunny June day in Central Park. Moments later, she was locked in mortal combat with a mugger, and David came to her rescue. They tell each other some truths, but only some. They know each other's mysteries, but only some. They slip into a realm of sensual deception and imminent danger. For who is Kate Duggan really, the woman who makes sexual fantasies come true? And who is David Chapman, the doctor who spends his day with other people's neuroses, guilt, and lies? Now, in the heat of a New York City summer, they will learn everything - when a stalker turns their mad lust into a murderous affair.