Pursuing the poltergeist: earthbound spirit or psychic projection?

A new book takes a fresh look at the strange phenomenon that has baffled and bothered people down the centuries

It can be asserted that the poltergeist, like that strange creature, the duck-billed platypus, really exists, and that some of its habits have been positively established — so says the late Colin Wilson in the final pages of his 1981 book…