When the heads of two students at P.T. Sherman Elementary suddenly inflate to the size of watermelons, it’s up to 5th-grade detective Mac Dylan to solve the riddle. Was it something they ate? A rare disease? Armed with his green notebook and trustworthy Silver Striker pen, Mac is ready to roll in his debut mystery.

A short story to help kids discover that thinking you’re better than other people only leads to problems in life. Good relationships require being thoughtful of others and apologizing when you’ve hurt someone.