a spiritualist perspective. At the start of the book, Doyle introduces the Crewe Circle and the medium William Hope, who has faced accusations of fraud regarding his ability to produce extra figures in photographs. He counters these allegations by discussing the extensive evidence he believes supports Hope's abilities, including testimonies from credible sources who have witnessed his work firsthand. Doyle emphasizes the importance of considering a broader context of Hope's long career and success in obtaining photographs with supernatural elements, arguing for a sympathetic understanding rather than a dismissive view based solely on select criticisms. He sets the stage for a detailed exploration of specific cases that he hopes will substantiate the claims of spirit photography. (This is an automatically generated summary.)