It was a time when spiritualism was hugely popular and there was a mystique surrounding photography’s process. And British photographer William Hope made the most of a 1920s society that yearned to learn more about the paranormal to produce this striking set of 'spirit photographs' which had the world captivated at the time. Mr Hope - who was part of the infamous Crewe Circle, a spiritualist photography group in the Cheshire town – was supported by many of his contemporaries including Sherlock Holmes author Sir Arthur Conan Doyle. But his work was later discredited after investigators discovered that he had used a photographic process called double exposure, where a single image is created by exposing the film several times. Original Article: http://www.dailymail.co.uk/news/article-3871650/The-ghosts-caught-camera-spirit-photographs-world-captivated-1920s-wasn-t-seems.html Original Video: http://www.dailymail.co.uk/video/news/video-1384819/Sir-Arthur-Conan-Doyle-discusses-spiritualism.html Daily Mail Facebook: http://facebook.com/dailymail Daily Mail IG: http://instagram.com/dailymail Daily Mail Snap: https://www.snapchat.com/discover/Daily-Mail/8392137033 Daily Mail Twitter: http://twitter.com/MailOnline Daily Mail Pinterest: http://pinterest.co.uk/dailymail Daily Mail Google+: https://plus.google.com/+DailyMail/posts Get the free Daily Mail mobile app: http://dailymail.co.uk/mobile