Apparently, the Swedish public complained about the historical inaccuracies in The Seventh Seal. While that's patently silly, it got under Ingmar Bergman's skin, so for his next historical film (an adaptation of a medieval ballad and Rashomon) he asked screenwriter and novelist Ulla Isaksson to help out. The two of them certainly had different views of what the film should be, but that didn’t stop them from making a fascinating piece of art.