Starting when Avram Leierwood was 7, he would read the books aloud with his mother, Mina. “We’d sit in the treehouse in our backyard and take turns,” recalled Ms. Leierwood, of South Minneapolis. But while Ms. Leierwood has remained an avid fan, Avram, now 15, is indifferent. When “Deathly Hallows” comes out, he will be […]