When Franny Stein, self-styled mad scientist, creates a robot to show her school friends the joys of science, she ends up learning something from them instead. There's nothing better in the world than being a mad scientist-at least according to Franny. And she's absolutely convinced that, if given the opportunity to be one, every kid in her class would feel the same way. So she's making it her mission to help her classmates discover their own inner mad scientists. All Franny needs for her latest experiment is a few volunteers, a half-completed two-headed robot, and an invisibility potion. Only this experiment just might prove to be Franny's most difficult. What do you do when your classmates don't know anything about mad science, and there's a doubly dumb robot running amok to prove it? In a celebrated new series that the Bulletin of the Center for Children's Books heralded as having the "glib, kid-appealing insouciance of Captain Underpants with an intelligence all its own, " Jim Benton provides emergent readers with a chapter book that is "both smart and snork-worthy."