The Case of the Tricking Treat (The Mathematician Mysteries Book 1)

In the city of Math-hattan, devious villains are making themselves look like normal people. But the truth is, they’re handing out poison candies to the young, little trick-or-treaters that are turning them into pumpkins! So in these days, nobody dares to carve a pumpkin or eat a squash. Mr. Detective Dan & his assistant, Avery Miller are on the case again to help the city cops to find out exactly ‘witch’ criminal has caused this crime.