Written by:  James Preller
 
Jigsaw Jones is a, puzzle fanatic detective who deals with all kinds of cases. He knows that mysteries are like jigsaw puzzles---you've got to look at all the pieces to solve the case.

There's a contest in Jigsaw's school to come up with a prize-winning invention. The kids are convinced the prize is a million dollars and everyone wants to win. But someone sneaky is messing up the contest. Jigsaw and Mila may have to invent some super-sleuthing gadgets of their own to solve this million-dollar mystery.
 
Paperback