Calvin Reed and the Missing Field Trip is Book 2 in the Calvin’s Busy Brain series, a funny and heartfelt chapter book / early middle-grade mystery for readers ages 8–12.

Calvin Reed has a fast brain. A very fast brain. He notices tiny clues, strange sounds, missing details, suspicious paper scraps, and things most kids miss completely. But when Room 12’s field trip fundraiser envelope disappears, Calvin has to solve more than a mystery.

The class trip to the Hayden Science Museum is suddenly in danger. Rumors spread. Everyone starts guessing. And when suspicion begins falling on someone who already made a mistake before, Calvin has to remember one very important lesson:

Noticing is not knowing.

With the help of his best friend Maya, his quiet classmate Noah, sarcastic-but-loyal Eli, careful Lily, and the rest of Room 12, Calvin follows the clues through classroom chaos, yellow recycling envelopes, wet footprints, a squeaky mystery sound, and one very serious principal with way too many clipboards.

But this time, Calvin is learning that solving the mystery is only part of the job. He also has to notice feelings, protect friendships, and steer his busy brain with kindness.

Perfect for readers who enjoy:

Funny school mysteries
Smart, curious kid heroes
Friendship stories
Neurodivergent main characters
Classroom adventures
Heartwarming lessons without being preachy
Books for ages 8–12

This story is classroom-friendly, parent-approved, and written for kids who love clues, comedy, and characters with big hearts.

Included:
Digital book file for reading and download.

Series: Calvin’s Busy Brain
Book: 2
Title: Calvin Reed and the Missing Field Trip
Subtitle: The Case of the Vanishing Fundraiser
Author: Don Hinton
Recommended Age: 8–12
Genre: Children’s chapter book / early middle-grade mystery
Themes: Friendship, kindness, problem-solving, emotional growth, neurodiversity, school mystery