Anyone who loves a mystery knows Miss Jane Marple and her crime-fighting finesse, seemingly powered by the clicking of her knitting needles. Over the past century, there have been a parade of such aging heroes: from the unexpected Mrs. Pollifax and relatable Jessica Fletcher to the indomitable Vera Wong and endearing Thursday Murder Club. Each of their stories captivate us with comfort, vicarious thrills, and the tantalizing possibility that one day, we might be them.