The Last Equation of Isaac Severy: A Novel in Clues

The Family Fang meets The Storied Life of A.J. Fikry in this literary mystery about a struggling bookseller whose recently deceased grandfather, a famed mathematician, left behind a dangerous equation for her to track down -- and protect -- before others get to it. Isaac hid a series of maddening clues in one of Hazel's favorite novels, drawing her ever closer to his treasure. But when her efforts fall short, she's forced to enlist help from those with questionable motives.