It all starts with a ring in a pawn shop -- a ladies West Point ring engraved with SRS. Jack Reacher knows, based on his experience and the year, it is not a thing given up lightly and decides to track the owner. The ex-MP's follows the ring across several states and a variety of unsavory characters as he discovers more about its owner's life. This title in author Lee Child's best-selling series relies less on non-stop action and more on procedure to answer questions, right some wrongs, and eventually leads to a showdown at the midnight line.