The central turning point of "The Virgin Spring" is the brutal rape and murder of Karin by the two elder goat herders. This act shatters the film's initial pastoral calm and sets in motion the themes of revenge and spiritual crisis. The foster sister, Ingeri, who had earlier placed a pagan curse on Karin, witnesses the entire ordeal from a hiding place, making her a complicit observer consumed by guilt.
The film's second major twist occurs when the murderers, by a cruel twist of fate, seek shelter at the home of Töre and Märeta, their victim's parents. The dramatic irony is heightened as the unsuspecting parents offer them Christian hospitality. The truth is revealed when one of the herders attempts to sell Märeta the very dress Karin was wearing—a dress she instantly recognizes. This discovery transforms Töre from a pious landowner into a cold-blooded avenger. He performs a strange purification ritual—uprooting a birch tree and whipping himself—before methodically killing all three herders, including the young, remorseful boy who was only a witness.
The film's climax is the discovery of Karin's body, guided by a guilt-ridden Ingeri. In his grief, Töre rails against God's silence but then vows to build a church on the site as penance for his own bloody revenge. As they lift Karin's body, a spring of pure water miraculously emerges from the spot where her head lay. This final event is the ultimate spoiler: an ambiguous act of God. It is not a resurrection, but a sign that can be interpreted as forgiveness, a promise of renewal, or simply a mystery. It provides a sliver of grace in the wake of immense brutality, purifying Ingeri and giving Töre a purpose to channel his grief and guilt, leaving the audience to ponder whether true redemption can follow such terrible sins.