Marco's Comments:
Reprint. Originally published: London : J. Murray, 1930.
Last book by Sir A. Conan Doyle dealing with the occult and his experiences in the field. The first chapter id about Houdini and it's were Conan Doyle elaborates he was a medium. Harry Price, in his review of this book for "The Journal of the American Society for Psychical Research", scoffs at this notion mentioning that Chefalo could escape from a packed case in less than 10 seconds...