Essential viewing for aficionados of French cinema, Serge Bromberg’s impressively researched documentary revisits Henri-Georges Clouzot’s aborted 1964 thriller L’Enfer (Inferno), the story of a hotelier consumed by feelings of paranoia and jealousy towards his beautiful wife. Drawing on original negatives, experimental screen tests, audio recordings and interviews with surviving cast and crew members, Bromberg tells the fascinating story of a controlling director who was given free rein to push back the boundaries of cinema, only to find his own sanity jeopardised.