A broken fence and an animal on the loose take center stage in book three of the series by a two-time Newbery Honor winning author.

Alex loves living on Zoo Lane, especially because he gets to visit his favorite animal in the world: the red panda. When he finds a hole in the zoo's fence, it presents the perfect opportunity to sneak into the zoo before school to see his beloved furry creatures. What Alex doesn't realize is that the broken fence will cause more problems than almost getting caught by the security guard. When an animal goes missing in the zoo, can he come clean about the fence?

In this third book of the series, two-time Newbery Honor author Patricia Reilly Giff has crafted a lively mystery about conservation, animal care, friendship, and problem-solving. In touch with the programs and initiatives that today's zoos are undertaking, Giff provides readers with a fresh look at the work of zoologists. Charming line artwork by Abby Carter appears throughout and keeps the story upbeat.