School Library JournalGr 3–6—In his third adventure, Adam "Melonhead" Melon and his friend and fellow FBI Junior Special Agent, Sam, believe that a neighbor is one of the FBI's Ten Most Wanted criminals. The boys take their investigation very seriously, working undercover, doing surveillance, taking notes in their evidence log, and snapping photographs of the person of interest, nicknamed the Chameleon. While carrying out the investigation, Melon is bound by his parents' rules, including his mom's "Remind-O-Rama" that reminds him what he shouldn't do. Now his dad has added the Melon Family Guidelines for Life that tell him what he should. Melon interprets the guidelines loosely, especially, "When in Doubt, Ask an Adult." The secondary characters stem from Kelly's previous novels, and readers who start with this book might be missing some backstory, but the humorous nature of Melonhead and Sam's investigation is sure to be a hit among middle-grade readers.
