The Passion of Anna (movie, 1969)

Andreas, a man struggling with the recent demise of his marriage and his own emotional isolation, befriends a married couple also in the midst of psychological turmoil. In turn he meets Anna, who is grieving the recent deaths of her husband and son. She appears zealous in her faith and steadfast in her search for truth, but gradually her delusions surface. Andreas and Anna pursue a love affair, but he is unable to overcome his feelings of deep humiliation and remains disconnected. Meanwhile, the island community is victimized by an unknown person committing acts of animal cruelty.