One Sunday afternoon, a man named William Mumler decided to take a self portrait. He said he was alone in the photography studio, but as the photograph developed he saw something very strange—the image of someone else, sitting beside him. Mumler’s “spirit photograph” was championed by advocates of Spiritualism, who saw it as evidence that the living could communicate with the dead. Mumler began to host portrait sessions in his studio, for a hefty fee. Abraham Lincoln’s wife, Mary Todd Lincoln, visited Mumler to have her portrait taken with the hope of contacting her late son. Louis Kaplan’s book is The Strange Case of William Mumler, Spirit Photographer. Say hello on Twitter, Facebook and Instagram. Sign up for our occasional newsletter, The Accomplice. Follow the show and review us on Apple Podcasts: iTunes.com/CriminalShow. We also make This is Love and Phoebe Reads a Mystery. Artwork by Julienne Alexander. Check out our online shop. Episode transcripts are posted on our website. Learn more about your ad choices. Visit podcastchoices.com/adchoices