Title: Return of the Sewer King
Description: "Something strange is happening to the city's water supply, and it's up to Arnold and Gerald to get to the bottom of it.  But when they descend to the dark depths of the sewer system and see the Sewer King, an even bigger mystery unfolds."--P. [4] of cover.
Subjects: Fiction, Sewerage, Arnold (Fictitious character), Water supply, Alligators, Juvenile fiction, Children's fiction, Adventure and adventurers, fiction