Title: El monstruo de las cloacas
Description: When the lake in one of Fogville's parks suddenly becomes polluted and starts to boil, Echo the bat and his human friends, the Bat Pack, venture into the sewers to find the monster that may be causing the problem.
Subjects: Monsters, Juvenile fiction, Murciélagos, Fiction, Water, Ficción juvenil, Bats, Agua, Monstruos, Contaminación, Pollution, Spanish language materials, Mystery and detective stories