Colin Wilson's interest in the occult and the paranormal has taken him into an area that can seem oddly domestic. Poltergeist seem not to do real harm and often make their presence known in quite normal surroundings. There is a sense of mischief rather than sheer evil in their tricks but it is the almost everyday nature of their activities that makes them both disturbing and fascinating. Detailed and wide-ranging, Poltergeist! is a treasure-trove of things that do, literally, go bump in the night, as well as a well-thought-out attempt at an explanation. It is compulsive reading.