It's the summer of 1966. Family camping is the rage. Boomer kids are everywhere. Star Trek is brand-new. Smartphones and social media haven't even been dreamt of yet. So summer crushes happen the old-fashioned way: young face to young face. While scoping out sites for stargazing at Castle Rock Lake, 12-year-old Eric meets a girl from the next campsite over. Charlene and Eric are both gifted, highly articulate students: Eric in math and science,...