Even in a land of eternal twilight, secrets can’t stay hidden forever. Seventeen-year-old Eyelet Elsworth has only one hope left: to find her late father’s most prized invention, the Illuminator. It’s been missing since the day a mysterious flash wiped the sun from the sky. Living in darkness is nothing new to Eyelet. She’s hidden her secret affliction all of her life-a life that would be in danger if superstitious townspeople ever guessed the truth. Orphaned when her mother is executed for a crime she did not commit, Eyelet sets out to track down the machine-her one and only chance at a cure. Alone and on the run, she finally discovers the Illuminator-only to witness a young man stealing it. Determined to follow the thief and recover the machine, Eyelet must venture into the deepest, darkest, most dangerous part of her twisted world.