Write a story which begins with the following sentence: As he picked up the book, Max realised that an
envelope had been hidden underneath it. In your writing, create a sense of drama and mystery.

Setting: The story takes place in a small coastal town in Massachusetts in the present time. It's a quaint town known for its historic public library filled with a wide array of books, including old, rare editions.

Main character: Max, a 28-year-old librarian, is a soft-spoken, intelligent individual with a deep love for books and mysteries. His world is usually quiet and predictable until he stumbles upon the hidden envelope, which piques his curiosity and pushes him out of his comfort zone.

Conflict: The envelope contains a cryptic note that hints at a local legend of a sunken ship carrying a vast treasure, leading Max into an unexpected adventure to uncover the truth.

Dialogue: Dialogue should be used to reveal Max's thoughts and feelings about the unfolding mystery, and to provide clues about the town's history and the legend.

Theme: The story will focus on themes of curiosity, adventure, and the thrill of uncovering forgotten histories.

Tone: The tone should be suspenseful and intriguing, capturing the sense of mystery and anticipation as Max unravels the clues.

Pacing: The story should start slowly, building suspense as Max discovers the note and starts researching, then speed up as he gets closer to finding the treasure.