It is the axis. The contrast between the sophisticated lady and the poor housewife. The tension. The clash. And the end. A film about the power. And its use. Simple, seductive, chilling. Great for the dose of predictability and nice use of ambiguity. Two woman. The bridge. And a whispering changing everything. The story has all the chances to seem unrealistic. But the beautiful acting gives the right kick to the story. To the dog and to not exactly the sheep.