The first of his twelve books, The Flying Cow, in which he described his experiences investigating the psychic side of Brazil, was translated into six languages and became an international best seller. His most recent book is Telepathy: the Twin Connection. He now lives in London and is a council member of the Society for Psychical Research.

See Interview with a Poltergeist, a Channel 4 documentary which examines the extraordinary, well-documented and puzzling case of ‘The Enfield Poltergeist’, paranormal phenomena that centred on 11-year-old Janet Hodgson in August 1977.