Grinning in the Dark — N.R. Wick

Bethany is plagued by night terrors of a shadowy figure with an enormous grin and huge, round eyes. When the creature becomes real and starts to torment her while she's awake, Bethany struggles to hold onto her sanity. She hides the problem from her best friend, Jordan, and her crush, Grey, to keep them safe, but discovers no one is safe from darkness.

Grinning in the Dark is a Young Adult short story from the upcoming collection Dark Ascension: A Demon Anthology.