"The Diviners" is a novel by Libba Bray set in the 1920s in New York City. It follows a teenage girl named Evie O'Neill, who discovers her supernatural ability to divinate, or read people's pasts. As she navigates the vibrant and tumultuous world of the Roaring Twenties, she becomes involved in a series of mysterious murders linked to her powers. Evie joins a group of friends, each with unique abilities, to uncover the truth behind the killings. The story explores themes of friendship, identity, and the clash between the old and new, all while immersing readers in the rich cultural backdrop of the era.