This is the book that brought information about EVP to the public. Voice phenomena were accidentally discovered in Sweden by Friedrich Jürgenson in 1957. Jürgenson showed Raudive how to record the voices and the book is the results of six years of research into the phenomena. A dead persons voice appears during playbacks of tape recordings on which no such voices were audible at the time of the original recording. These voices often state their names and may be identified as male or female, but all speak very much faster than is normal and employ a curious speech rhythm.

In the course of his research, Dr Raudive was joined by eminent scientists, physicists, psychologists, and theologians, many of whom were university professors. Before undertaking the publication of this English-language edition, the publishers have requested other respected scientists and scholars to verify procedures and findings related in Dr Raudive’s book. The discovery of this phenomenon – later called the Electronic Voice Phenomenon – is a breakthrough of unquestionable importance.