Slender Man Chapter series book, Chapter 3. shadows in the dark this the 3rd chapter to the first Slender Man chapter series book. the first book had 2 chapters in it and end with the chapter 3. shadows in the dark. this book begins in the the old abandon factory warehouse. where the kids are setting up their surveillance equipment and computers at the main office desk. as they have an uninvited guest appearing and vanishing at will before their eyes. and mysterious things are happening to the kids and the area their in. freaking things going on in the old abandon factory warehouse. will the kids find what their looking for or will the entity of the warehouse pick them off one at a time?