Tick Tock

You find a a small book in the back corner of the library in the middle of the floor. Quite a odd place to leave such a book. You pick it up and look at the cover and see a just a picture of a persons face you wave it in the sun and a skull is revealed, there is no title of the book so you open to the first page to read what it says. It talks about a demon never seen , only heard but not as growls or moans no that's to obvious. It mimics the ticking of a clock to get close to you and when you think you are safe from its grasp why my dear then everything goes black. Tick, tock. Tick, Tock.