Cyril Permutt is professional photographer. His job allows an ideal background for this book, for he knows photograpy and cameras. Richly illustrated by very many old, rare, famous photos, the book is a reference about spirits photography because it is full of information and photos. Surveying many of these photos, he describes the techniques required for securing paranormal psychic photography of this kind. He found that the best results could be obtained with Infra-red.

A very respectful look at what the Permutt calls "overwhelming evidence of supernormal photography".