In her author's note, Marion Winik writes that in Mexico on the Day of the Dead, "people build altars to their loved ones . . . they go to the cemetery and stay all night, praying, singing, drinking, wailing. They tell the sad stories and the noble ones; they eat cookies shaped like skeletons. They celebrate and mourn at once." Striking that balance, The Glen Rock Book of the Dead presents snapshot portraits of The Jeweler, The Driving Instructor,...