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Jonathan KellermanMystery · Crime·b. 1949
Devil's Waltz
Toddler Cassie Jones is constantly rushed to the hospital with unexplained illnesses, but child psychologist Alex Delaware suspects the medical emergencies are being manufactured. When a doctor is found murdered, Alex and detective Milo Sturgis must identify the predator hiding behind a mask of devotion. They face a race against time to save the child from a killer who may be closer than anyone realizes.