A mysterious letter hidden in a valuable book leads a novice bookshop owner to uncover a decades-old disappearance in a quaint coastal town.

A former librarian turned bookshop owner uses her literary expertise and newfound amateur sleuthing skills to solve a decades-old missing person case in a small coastal town, uncovering long-held secrets and finding her place in a close-knit community.

When Olivia Paige inherits her aunt's bookshop in charming Millbrook Cove, she expects a quiet life surrounded by books. But a cryptic letter discovered in a rare edition of "The Hound of the Baskervilles" plunges her into a 30-year-old cold case. As Olivia investigates, she clashes with skeptical locals and forms unlikely alliances, including a gruff fisherman with surprising literary knowledge. With her keen analytical mind and vast knowledge of mystery novels, Olivia must piece together clues from dusty records and town gossip to solve a long-buried secret—and possibly put herself in the crosshairs of a killer who thought their crime was long forgotten.