Phineas L. MacGuire—a.k.a. Mac—aims to be the best fourth-grade scientist ever. It’s a tall order, but he’s confident that he can achieve his goal, especially since Aretha has asked him to help her earn a Girl Scout badge by creating the mold that produces penicillin. How many fourth graders can say they’ve reproduced penicillin? None, as far as Mac knows. And who knows more about mold than Mac? But soon Mac is busy managing Ben’s campaign for class president and dealing with his weird new babysitter. How can he focus on mold?
Frances O’Roark Dowell is the bestselling and critically acclaimed author of Dovey Coe, which won the Edgar Award and the William Allen White Award; Where I’d Like to Be; The Secret Language of Girls and its sequels The Kind of Friends We Used to Be and The Sound of Your Voice, Only Really Far Away; Chicken Boy; Shooting the Moon, which was awarded the Christopher Award; the Phineas L. MacGuire series; Falling In; The Second Life of Abigail Walker, which received three starred reviews; Anybody Shining;Ten Miles Past Normal; Trouble the Water; the Sam the Man series; The Class; and most recently, How to Build a Story. She lives with her family in Durham, North Carolina. Connect with Frances online at FrancesDowell.com.