Crack the codes and solve the mysteries alongside beloved young sleuths Todd and Noelle in the complete Third-Grade Detectives series—now available in a collectible boxed set!

When the third-grade class gets a new teacher, he quickly becomes everyone’s favorite for one important reason: Mr. Merlin used to be a spy, and he knows all about secret codes and how the police solve cases. With the skills that they learn in his class, these third graders are equipped to handle whatever comes their way. From anonymous letters to neighborhood mischief to even helping the police track down an art thief, the adventures never stop for this clever class!

Enjoy the entire series with this complete boxed set that includes:

The Clue of the Left-Handed Envelope

The Puzzle of the Pretty Pink Handkerchief
The Mystery of the Hairy Tomatoes
The Cobweb Confession
The Riddle of the Stolen Sand
The Secret of the Green Skin
The Case of the Dirty Clue
The Secret of the Wooden Witness
The Case of the Bank-Robbing Bandit
The Mystery of the Stolen Statue