Eddie Becker has the idea of a lifetime, and creates plans for what he promises is going to be a million-dollar invention. Then the plans get stolen. Worst of all, after Jigsaw does some digging, he suspects the principal may be the thief! Now Jigsaw has to invent a gadget of his own to find out the truth.

Featuring friendship, school, family, and a diverse community, these early illustrated chapter books from James Preller have it all. Got a mystery to solve? Jigsaw Jones is on the case. When Bobby Solofsky is accused of stealing the grand prize for a pet talent show, it's up to Jigsaw to clear his greatest rival's name. Soon, more things start to go missing at the pet store and Jigsaw enters his own dog into the contest to solve the case. Can he find...

Someone is stealing brownies from Mike and Marys sandwich shop. Jigsaw is piecing together the clues one crumb at a time. But no one is going to snatch a brownie while a detective is watching. Time for Jigsaw to go undercover and catch this brownie bandit.

Jigsaw's school is haunted! Some kids saw a ghost dancing in the classroom. Jigsaw Jones is not afraid. He will catch this glowing ghost...even if he has to stay after school to do it!

Jigsaw's brothers love to play practical jokes. But Jigsaw does not have time for games. He has a big case to solve. Danika's kitty has been cat-napped. Can Jigsaw solve the mystery? Or will the cat burglar have the last laugh?