A lyrical and spiritual cinematic essay on ”The Exorcist” explores the uncharted depths of William Friedkin's mind's eye, the nuances of his filmmaking process, and the mysteries of faith and fate that have shaped his life and filmography. Passionately discussing his influences and interrogating the obsessions he continuously returned to throughout his filmmaking career, William Friedkin makes for a riveting subject – reflective, insightful and often disarmingly candid.