The secret zoo / Chick, Bryan

Noah and his friends follow a trail of mysterious clues to uncover a secret behind the walls of the Clarksville City Zoo--a secret that must be protected at all costs.

Noah and his friends follow a trail of mysterious clues to uncover a secret behind the walls of the Clarksville City Zoo and find his missing sister Megan.

Megan, a nine-year-old who lives next to a zoo, sees monkeys jumping over the walls, and when she disappears, her older brother Noah and his friends go on a rescue mission as the Adventure Scouts, discovering strange animals in the City of Species, where humans and mysterious creatures live together.