Shadows — David Gallie

Accused of killing all her classmates, seventeen year old Lynk Amber Grey has spent the last year and a half in the dungeon, the lower bowels of the Madison Mills Lunatic Asylum. Followed by the tall, gaunt looking man she knows only as Slendy, Lynk accepts a chance to escape the asylum. After gaining her freedom, she soon finds that her life has a very specific purpose, a purpose that she would never have imagined. Helped by the Ascendite's, a secret group which aims to rid the earth of evil spirits, Lynk must stop the shadows in their attempt to break free from hell and come to terms with the fact that she isn't a normal teenager.