This is fun, but it has the same problem as its predecessor; it's over-explained. If Steven King says a house is haunted because a tormented dog or a zebra used to live there and its ghost now has a vendetta against the descendants of their neighbors, we understand the premise and we don't need to take notes to absorb it all. Mr. Mitchell has created a detailed alternative supernatural reality with elaborate terminology and his characters have to pause, as in a bad radio play, and explain it to us. It's similar to the scene where the bad guy has the half-drugged superhero tied to a chair, but pauses before killing him to tell his life story. The advantage of Slade House over The Bone Clocks is that it is shorter.