Description Nightwing joins Batman and Robin in a wild adventure against Gorilla Grodd in this exciting early chapter book...When the animals escape Gotham City Zoo, Batman calls on Robin and Nightwing for backup. Turns out, the runaway beasts are under the mind-control powers of the evil Gorilla Grodd! Can the Bat-Family quickly corral this animal attack, or are the Caped Crusaders in for a wild ride? With easy-to-read text and full-color illustrations, this exhilarating series is a must-read for young superhero fans and the entire family!