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United Middle School Mysteries Book 18
Paperback
Series: United Middle School Mysteries, Book 18
Publisher: Esther Rohly
Published: May 29 2026
Pages: 210
Weight: 0.55
Height: 0.48 Width: 5.50 Depth: 8.50
Language: English
United Middle School Mysteries
By E. J. Rohly
At United Middle School, mysteries never stay small for long.
When the annual science fair erupts into chaos with sabotaged projects, disappearing rankings, hidden tunnels, and dangerous experiments spiraling out of control, Jake, Emily, Max, and Amy are called in by Principal Thompson to uncover who is trying to destroy the competition from the inside. As the clues lead deeper beneath the school and tensions rise between students determined to prove themselves, the investigators discover that someone is willing to risk the entire science fair to fix what they believe is unfair.
But before the team can fully recover from the science fair disaster, a second mystery sweeps through the school when computer logins begin disappearing, student accounts are scrambled, and strange messages start appearing across classroom screens. What first looks like a technology prank soon leads the investigators into an abandoned robotics lab, forgotten engineering systems, hidden files, and a dangerous network restoration sequence that threatens to crash the entire district computer system.
Along the way, Chip and Mia create more confusion than anyone thought possible, secret friendships are tested, old mistakes return to the surface, and the investigators discover that some mysteries are not only about solving problems, but about understanding the people behind them.
Filled with suspense, humor, hidden clues, school hallway chaos, technology trouble, and heartfelt moments of teamwork and belonging, these two exciting mysteries continue the unforgettable adventures of the students of United Middle School.
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