Mom's Choice Gold Award Recipient Winner of the 2017 Moonbeam Children's Book Award for Pre-Teen Fiction All it takes to start a summer adventure is a pinch of powder… It's the longest, hottest summer of all time, and siblings Jim and Carrie are being forced to spend it in their dreary new town of Claremont, Ohio. Desperate to escape their boredom, the two kids take a job looking after their neighbor's dogs and quickly realize they're in for a more exciting summer than they could have possibly imagined. There's more to Mrs. Simonson from down the street than meets the eye. She's a pulvologist--a scientist that makes powders that can dye hair green and make broccoli taste like chocolate. In her laboratory, she dreams of inventing a powder that turns things invisible. Jim and Carrie's summer is looking up, but trouble arrives when sinister businessmen try to shut down their family bakery. Now, it's up to brother and sister to save the day. However, they're about to learn that a pinch of powder might cause just as many problems as it solves.