People disappear without a trace. Captain Briggs, his crew, and his family vanished from the Canadian built Mary Celeste. Ben Bathurst walked around the horses harnessed to his coach - and was never seen again. People appear without explanation Kaspar Hauser arrived in Nuremberg as inexplicably as if he d materialised from some unknown dimension. Researchers of the paranormal have investigated cases where thought-forms seem to have acquired quasi-physical properties. Madame Blavatsky claimed to have done it. There were times when Nikola Tesla, the brilliant electrical experimenter, seems...