For twenty-three years, Aria Nealy has been told to always leave her lights on - even when sleep has taken her under. She has never personally questioned the odd behavior of her parents' strict ruling, but often wondered how the strange instruction came about. Now that Aria is staying at her own place with a speculative and curious roommate, will Aria be able to keep up with this specific deed that's been imperative her whole life?
Or will she finally figure out what truly hides deep in the shadows of the night?