It would have made sense for Cassavetes to direct this himself, based on the unflinching study of relationships he provides in his own films. If you're not familiar with the play, it would help to read it, but, doing so will also expose the flaws in Mazursky's treatment. Liked it's ambition, bieautiful film, acting standouts: magnificent Gena Rowlands and Vittorio Gassman. I will watch it again. "Show me the magic"