It's the annual statewide history test challenge, and Joyce Kilmer Middle School has never had a finalist until now! This year, there are two finalists, and they're both Jenny's friends.

Our favorite goblin and troll detective team, Tank & Fizz return, this time to determine whether an unpopular schoolmate is cheating when building his impressive battle bot. A side plot becomes central as plans to build a huge sports arena in Slick City and a mysterious figure who warns against its completion lead the detectives to mysteries that include portals, demons, corrupt officials, and school bullying. With a joyful literary shrug, these are...