• Sir Arthur Conan Doyle was greatly interested, later in his life, with spiritualism, seances, clairvoyance and other esoterica. This book is a sceptical critique of these phenomena, very scarce and interesting.
• Published by Watts & Co., London, [1920] (1st edition).
• Octavo, viii, 160 pages.
• PRICE COMPARISON: Only one other copy of this softcover found at the time of listing - US$93 (A$142).