Unraveled (Keeper of the Lost Cities, #9.5) by Shannon Messenger

Book 9.5 in the New York Times and USA TODAY bestselling Keeper of the Lost Cities series follows fan-favorite Keefe on his adventures in the human world during the events of Stellarlune.While his friends faced their own challenges in Stellarlune, Keefe was in the human world. Where did he go, who did he see…and what shocking secrets were revealed to him? This can’t-miss installment of the series is told entirely from Keefe’s POV and contains crucial clues about truths buried deep in the elvin world.