You are a little boy. Once you found a strange book "Babadook" on your desk at school, you decided then to pick up the book and read it. But you only got your hands on it when you passed the 3rd grade. You picked up the book and opened it

"Read about him, hear only the sound – and the Babadook will not disappear. If you're smart and can be sharp-sighted, you'll get a friend you won't forget. His name is Mr. Babadook - and the book is about him, he is our friend. You will hear a screeching sound, and then a triple knock... Baba duk, duk, duk. That's how you'll know him if he shows up. Ba, baba duk duk duk. A hat on his head - he's funny... If you see it in the night, you won't sleep a wink anymore. He will take off his mask soon Get ready to see, because when you see what's under it, you want to die."

you heard the tapping of nails under the bed and a slight male husky giggle...

Babadook: Heh heh heh~