It is another scorching hot summer in Huntsville, Texas, and Caroline Mason is one year away from high school graduation. While living in an old building that houses her family's bookstore business and working as a lifeguard, Caroline reads mysteries, explores old treasures inside the building's attic, and contemplates where life is going to lead her next. But she has no idea that something is about to unfold deep in the heart of Texas that will lead her down a path she never expected. What no one knows is that the characters in Caroline's favorite books have been coming to life and holding secret conversations with her in the attic since she was young. Because they know she has an insatiable appetite to know about people and things, they have been assigned to train and assist Caroline in solving mysteries and righting wrongs. She finally gets her chance when she becomes entangled in a whodunit investigation surrounding a series of local robberies. As she relies on her fictional and real-life friends to help her untangle complex clues, will she ever find the answers? In this exciting young adult tale, the doorway to an attic in a family bookstore opens a new world of mystery and adventure for a teenage sleuth and her family.