A bright Florida sun illuminates her blonde hair and white shoulders when she finally lifts the block and breaks the surface of Card Sound. Curious, then appalled, a bridge fisherman quits his rod to find a telephone. It is 1987. Her name is Mary Clarke, missing three days earlier from the cheerful kitchen of her spacious home in an upscale Miami neighborhood. Cherished wife, two kids in primary school, by all accounts without an enemy...