Perhaps you remember the whipped splendor of the Choco-Lite, or the luscious Caravelle bar, or maybe the sublime and perfectly balanced Hershey's Cookies 'n Mint. The Marathon, an inimitable rope of caramel covered in chocolate. Oompahs. Bit-O-Choc. The Kit Kat Dark. Steve Almond certainly does. In fact, he was so obsessed by the inexplicable disappearance of these bars-where'd they go?-that he embarked on a nationwide journey to uncover the truth...