Summer is in full swing as tourists flock back to the Northwoods and travel to Lofty Pines, Wisconsin. For Rain Wilmot, owner of the Lakeside Library, this is the perfect opportunity to bring back her mother's summer book club. But the summer sun starts to really heat up when one of the club's members, Lily Redlin, is found dead in her own home not long after the first meeting.

Alongside her sidekick and neighbor Julia Reynolds and the charming Jace Lowe, Rain discovers that the murder is seemingly inspired by the book the club recently discussed Agatha Christie's classic mystery novel Sparkling Cyanide. But who would kill Lily, and more importantly, why?

The deeper Rain dives into the story, the more confusing and complicated the plot becomes. Was Lily murdered to cover up a tragic accident that occurred years ago involving an old classmate? Or were the rumors true--did Lily really possess a priceless original Laura Ingles Wilder manuscript and someone killed her for it? And what about the mysterious letter Lily received just before her death from a supposed long-lost relative? Was it a hoax?

With a long list of suspects and motives, Rain realizes that all leads come back to people involved in the book club. Rain and her friends take a page from Agatha Christie's book by hosting a reenactment of the club's first meeting to flush out the killer. Will Rain's plan succeed--or will this librarian's book be checked out for good?