Left, Kathleen Turner, William Hurt, “Body Heat” (1981). Right, Barbara Stanwyck, Fred MacMurray, “Double Indemnity” (1944). Warning: Contains Spoilers By Paul Parcellin After I moved to L.A. in 2008, I got together with a Meetup group that was going to see a screening of “Double Indemnity” (1944) at the ArcLight Theater in Hollywood. I was…