When Hollywood mogul Walter Wanger (Jon Hamm) shot an agent he suspected was having an affair with his actress wife, Joan Bennett (Zooey Deschanel) — one of the key femme fatales of 1940s film noir — Bennett was the one who paid a public price for her husband’s crimes. Joan and Walter’s granddaughter/filmmaker Vanessa Hope, and film historian/podcaster Karina Longworth (You Must Remember This), tell the untold story of the Bennett/Wanger romance and professional partnership — a film noir played out in real life.