Three stories from the world's best-selling author include the tale of a pair of divorcees who begin a strangely intense game of make-believe and a popular advertising exec who notices the people around him are being murdered. The wealthiest zip code in Florida doesn't just have billionaires, yachts, and private planes, it also has the best murder plots money can buy. The Palm Beach murders: Both survivors of the divorce wars, Christy and Martin...