Yuma Public Library

"Summer vacation has finally arrived, and the Math Inspectors deserve a break. After all, their sixth-grade year was a busy one. On top of all the normal school stuff, Stanley, Charlotte, Gertie, Felix, and Herman made quite a name for themselves as amateur detectives. But when a relaxing day of roller coasters, riddle booths, and waffle eating contests turns into a desperate scramble to save a beloved landmark, the friends quickly discover that this...

Sixth-graders Stanley, Charlotte, Gertie and Felix did more than just start a detective agency. Using their math skills and their gut instincts, they actually solved a crime the police couldn't crack. Now the Math Inspectors are called in to uncover the identity of a serial criminal named Mr. Jekyll, whose bizarre (and hilarious) pranks cross the line into vandalism. But the deeper the friends delve into the crimes, the more they realize why they...

"Stanley, Charlotte, Gertie and Felix are your typical twelve-year old kids. They love hanging out after school, they love burgers and milkshakes, and they love math. Wait. What? Oh, and one more thing. If there's anything they love more than math, it's solving mysteries. Thankfully, their hometown of Ravensburg, New York has plenty of mystery. Join these four friends in their hilarious adventures. Where there's always a little bit of math and a whole...

When the Claymore Diamond is stolen from Ravensburg's finest jewelry store, Stanley Carusoe gets the bright idea that he and his friends should start a detective agency.