When it comes to looking for the latest crime novel by your favorite best-selling author, fans don’t want the mystery to begin in the bookstore, so publishers sprinkle graphic clues on the jacket cover to lead shoppers to the writers they want. The covers, shown here, are by designer Peter Mendelsund, associate art director at Knopf, for the Jo Nesbo series; design firm Richard, Brock, Miller and Mitchell (RBMM) for the Dick Francis horse-racing murder mysteries, and designer Michael Stirrings for the Sue Grafton alphabet murders. In such cases, the cover design “brands” the book as part of a series, and signals the likely appearance of recurring main characters — e.g., Nesbo’s detective Harry Hole and Grafton’s Kinsey Milhone. Familiarity sells.