Evie O'Neill is a fictional character from the young adult novel series titled "The Diviners," written by Libba Bray. Set in the 1920s, Evie is a spirited teenager with a talent for reading people's secrets through their belongings. She is known for her bold personality and love for the glitz and glamour of the Jazz Age. In the story, Evie moves to New York City to live with her uncle, where she becomes involved in a supernatural mystery. Her character embodies themes of friendship, self-discovery, and the challenges of growing up during a transformative era in American history.