Lee Child's Reacher series (15 books in all) is a thundering force among modern thrillers. For the uninitiated, it follows the stoic, hulking, and streetwise Jack Reacher, a former military policeman who's now a drifter with a vast capacity for protective and retributive violence. The short story 'Second Son' is a snapshot of the life of Reacher and his family circa 1974, while they're stationed on a military base in Okinawa. Upon arriving they immediately get into deep trouble that's compounded by some bad news. For those new to Child's writing, the action is interspersed with contemplative moments, such as when Jack's grandfather, a prosthetic-limb maker in Paris, recounts that '… a great war leaves a country with three armies: an army of cripples, an army of mourners, and an army of...