Mr. Henderson’s copy of the Essentials of Music Theory: Teacher’s Answer Key was more than a book; it was a shield. To his ninth-period theory class, it was the Holy Grail, the only thing standing between them and a failing grade on the dreaded Unit 6 Harmony Test.

The room went silent. Mr. Henderson didn't yell. He simply sat down, looked at the empty drawer, and then at the twenty-four faces before him. Without the book, the power dynamic shifted. The students realized that if Mr. Henderson couldn't grade their homework, they couldn't move on to the spring concert. No concert meant no trip to the city.

One rainy Tuesday, the unthinkable happened. During a fire drill, the classroom was left unlocked. When the bell rang for the students to return, the desk drawer was hanging open like a Slack-jawed yawn. The Answer Key was gone.

Mr. Henderson smiled, pulled a fresh piece of chalk from his pocket, and turned to the blackboard. "Then let's stop worrying about being right," he said, "and start listening."

For thirty years, the book had lived in the top left drawer of his oak desk. Its spine was held together by yellowed Scotch tape, and the edges of the pages were softened by thousands of quick flips to verify a deceptive cadence or a secondary dominant.

Should we try writing a , like a mystery or a comedy , centered around the book?