Lancelot of the Lake

King Arthur learns that his wife, Queen Guinevere, has been having an affair with Lancelot, who at the same time remains loyal to the king, particularly after Arthur's traitorous nephew Mordred commits an attempt on his life.

Lancelot of the Lake is a 1974 drama fantasy movie directed by Robert Bresson, starring Humbert Balsan, Luc Simon, Vladimir Antolek-Oresek. It holds an IMDb rating of 6.9/10 from 4,706 votes and runs 1h 25m.