This tale has all the ingredients of a rewarding read: suspended reality (a bright blue mouse whose tap-dance keyboard messages forge a human-friend bond), heart-pounding adventure (of his 90+ siblings who escaped their lab-captors, Isaiah-the-bright-blue-mouse narrowly escapes recapture and plans a risky rescue), and rich vocabulary (urbane, dulcet, cowlicky, and so much more!). Every chapter begins with an original proverb that both foreshadows and empowers: A mouse of words and not of deeds is like a garden full of weeds; A mouse's best teacher is his last mistake; Hope is putting faith to work when giving up would be easier. The authors clearly understand the pulse (and needs) of middle grade readers and have masterfully blended noble themes with entertainment. "Flora and Ulysses" meets "The Cricket in Times Square" in Patterson's bestselling story that follows the illuminating journey of a very special mouse, and the unexpected friendships that he makes along the way. Illustrations.