Investigation Books

Alexandre and Eléa, two detective siblings, team up to solve the case of the stolen royal jewels. With their investigation skills and determination, they uncover clues, inter…

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Here it is finally! Investigation 101! Ash is on a quest to find the culprit …

Jeff and Alex, two young authors, team up with their new friend Lucy to solve the mystery of stolen computers at their school. Using investigative skills taught by Lucy's FBI…

If you read the "Investigation" series. Then this theory about it will blow your mind!

In the town of Gladstone, children start exhibiting strange behaviors. Ranger Ben, a detective, investigates the mystery.

Henry, a toucan, loses his toy turtle and enlists the help of his friends to find it. They encounter various challenges along the way.

Mrs. Humble Bunny's peaceful life is disrupted when Foxy is murdered and her picnic basket is stolen. The community comes together to solve the mystery, revealing Young Eagle…

After the release of a new robot from a company that's on watch by the police, a detective named Cash Hecton notices that all the police are missing! He tries to find one of …