The Beholder

Kathrine Anderson, a normal sixteen year old girl wise beyond her years, or so you would think. She is what demons call Beholder. Of what you may ask? The secret of otherworldly creatures that lurk in our world at night, the demons that hide under your bed, or in the closet. Oh they are very much real, and it's Kathrine's job to make sure they don't harm the human race to the best of her sixteen year old ability.
Kathrine is the Savior and Destroyer
She's the hero in this story
And she will come for you.