Unfortunately, this is one of the most underrated films in movie history. As a matter of fact, it's almost forgotten nowadays, because it was a flop when it came out in 1966.
Jules Dassin's fourth film with his wife, Melina Mercouri, is a slow-moving, poetic love triangle: Maria and Paul, a couple in their forties, travel through Spain with a mutual friend, Claire (played by Romy Schneider), and their daughter. On their way to Madrid, they come through a village where a man has just shot both his wife and her lover. Maria, who has realized that her relationship with Paul has changed, wants to help the murderer...
One of the most surprising twists in the plot is the lesbian relationship between Maria and Claire. Maria wants to catch Claire in Paul's arms, and in a delirious state of mind she dreams about it. The scene in the shower with Mercouri and Schneider is pretty unexpected, though.
The cinematography is just stunning, Mercouri's acting is divine, and Romy Schneider was never as pretty as in Dassin's drama. It's hard to find, but it is a must-see movie!