Chet Gecko Mystery Books in Order

Fourth-grade private eye Chet Gecko takes his first case when Shirley Chameleon's brother Billy goes missing. Following the trail brings Chet up against a fearsome Gila monster and puts his promised stinkbug-pie fee at risk.

Principal Zero is suddenly being nice, which is all the proof Chet Gecko needs that something is wrong. With Natalie, he follows clues through Emerson Hicky and uncovers an impersonation plot reaching toward Mr. Big.

Cafeteria worker Mrs. Bagoong hires Chet to find whoever is stealing food supplies. The slimy trail leads toward Chet's own backyard and his enemy Jimmy Cobra, leaving the detective in serious trouble.

Chet notices students at Emerson Hicky slipping into strange, hypnotized trances. Even without a paying client, he investigates a sinister plot that could leave his classmates asleep, and Chet next in line.

A bright red fire engine races into action in this simple, kid-friendly story. Young readers can follow the exciting vehicle, its important work, and the community helpers who respond when they are needed.

Classrooms are wrecked, playground tunnels appear, and rumors point to a were-hamster at Emerson Hicky. Chet follows the clues to learn whether the school faces a monster or a science project gone wildly wrong.

Chet's enemy Herman the Gila Monster hires him after football players start disappearing and Herman is blamed. To clear Herman's name, Chet goes undercover and faces the thing he fears most: P.E. class.

A winning ticket for a year's supply of giant Malted Falcon desserts disappears after show-and-tell. Driven by clues and an impressive sweet tooth, Chet races to find the thief before the prize can be claimed.

Chet uncovers a cheating ring at Emerson Hicky and decides to shut it down. The suspects include glamorous Lacey Vail and Chet's classmate Shirley Chameleon, making this case especially tricky for the lizard detective.

Chet hates being stuck in the fourth-grade play, especially when it means a scene with Shirley Chameleon. While he battles stage fright, a missing-persons case moves into the theater and puts opening night at risk.

A strange client brings Chet a bizarre case, but it becomes serious when Natalie is framed and expelled. Killer robots, a lovesick parrot, and a missing partner lead Chet toward a dangerous schoolwide conspiracy.

Chet Gecko shares private-eye advice on suspects, evidence, searches, secret documents, and detective snacks. Part handbook and part cookbook, this companion offers young sleuths practical activities with Chet's trademark jokes.

A rival detective solves a case that leaves Chet and Natalie stumped, bruising Chet's reputation. But when the annoying newcomer disappears, Chet must find him or risk being blamed for something he did not do.

A case of extortion during Emerson Hicky's student-council election draws Chet into school politics. What begins as a simple investigation twists into a fight for control of the school, with Chet caught in the middle.

When Chet's sister is robbed, he takes the case despite their complicated relationship. Soon valuables are disappearing across Emerson Hicky, and Chet must trace the thefts to the shadowy figure pulling the strings.

Zeke, Stephanie, Hector, and Hector's sarcastic cat Fitz discover Underwhere, a bizarre world beneath their feet. When the evil Underlord threatens the human world, the kids must become heroes before they are ready.

Chet Gecko takes on another dangerous case at Emerson Hicky Elementary, where a new suspect and a tangled trail of clues test his private-eye skills. He will need Natalie, nerve, and plenty of snack-powered persistence.

Chet's favorite librarian is replaced by a strange machine, then Emerson Hicky fills with talking pets, witches, and other impossible events. With Natalie suddenly gone, the lizard detective faces one of his weirdest cases.