This was one bizarre party. The very idea: Formerly married couples getting together on a Sunday evening to await return of their children from former spouses who had weekend custody. At a glitzy mansion in Palm Beach, no less. Maybe it could work-Sunday afternoons being so lonely since their divorces. But when the exes parked their cars, grabbed drinks, and plunged right into the dancing and flirting and unconcealed lusting, Go knew there was going to be trouble. A psychologist specializing in treatment of children and adolescents, he was only there because his girl friend, Mo, asked him to accompany one of her friends. A dollar-a-year director of a billion-dollar charity, Mo had a business meeting to attend. Go wanted to leave as soon as possible, but he soon realized there was something else going on at this strange party. The gathering--they called it "The Exchange"--was a front for something. Drugs? Too obvious. Money laundering? Maybe, but why bring the children? When the fireworks started and the former husband of Mo's friend was found murdered, Go figured it was none of his business. No such luck. Soon Mo and Go were dragged into the middle of a murder investigation, Go became the chief suspect, and their relationship was imperiled . Working together, they combined their professional skills to figure out the horror of what was really going on and solve the mystery.