Malcolm's class trip to the zoo goes bananas when animals break out of their cages. He's convinced the place is haunted, but is banned from the park when he climbs a cage to get his ghost zapper back from a monkey. Can the boys enlist Mrs. Goolsby's help to stop the ghost that's letting the animals out of their cages? Aligned to Common Core standards and correlated to state standards. Calico is an imprint of Magic Wagon, a division of ABDO.