A funny, wise and heartwarming story, with a truly one-of-a-kind hero, from the author of the highly-acclaimed I, Cosmo and My Life as a Cat. Clementine is a genius. She can calculate pi to 69,689 places, dreams in Latin, and is a chess prodigy. Clementine is also a mouse. But when she escapes from the lab which has bred her, Clementine discovers that it's not enough to be the smartest mouse in history if she wants to survive in the real world - especially while the scientists who kept her are trying to recover their prize specimen. And so, together with her new human friends, Clementine must make a new life for herself... and find a way to earn her freedom - for good.