Echo Squad: The Whispering Statue: A Sound-Based STEM Mystery for Kids 9-12 – Book 1

He can see sound. She (his deaf little sister Mina) can weaponize silence. Together with their K-9, they're the Echo Squad.

When 12-year-old Leo Park's sister Mina invents glasses that make sound visible, Leo thinks they'll get grounded for life. He's half right.

Now they can see three-day-old whispers, invisible crime scenes—and a villain no one else can detect. The Conductor uses infrasound: sound waves so low no human can hear them, but powerful enough to shatter jade, control minds, and collapse buildings.

His next target? A concert hall with 3,000 people inside. His instrument? A frequency that turns human ribs into tuning forks.

Leo, Mina, and their retired German shepherd Rusty have one night, one broken pair of glasses, and one theory about a humming night guard named Carlos. If they're wrong, the whole city hits a deadly note.

Echo Squad: The Whispering Statue is a fast-paced middle-grade mystery for kids 8-12 who love:

• Tech gadgets & real science (infrasound, resonance, phase cancellation!)

• Sibling detective teams who use brains over brawn

• Asian American heroes in STEM

Perfect for readers who enjoy The Mysterious Benedict Society, City Spies, and The 39 Clues.

Book 1 of the Echo Squad Series.

Listen closely — the echoes are always watching.