"After waiting all year for mango season, Marianne is excited that the mangoes on their tree are ripe and ready to eat. She loves mangoes and plans to eat all of them. But when she and her sidekick cousin Zoe check out the tree, the lower branches have been picked clean. Someone is stealing their mangoes! Who could it be? Marianne's neighbor says it could be a mango monster. This exciting idea is more than a bit scary, but the girls are not deterred, and they decide to catch the mango monster in the act. They set all kinds of traps, hoping to uncover the thief--and end up with surprising results"--Provided by publisher.