Basil wants to hear Dorian deny the accusations against him. Basil says that he can't believe the rumors when he sees Dorian's innocent and pure face. However, he needs to know the truth, to see Dorian's soul; but, as Basil says, only God can do that.
Dorian laughs bitterly at Basil's preaching. He agrees to allow Basil to see his soul — the portrait. Mad with pride, he tells Basil that no one will believe it if Basil should tell them what he sees, or they will simply admire Dorian the more. He leads Basil up the stairs to see the portrait.
In the attic schoolroom, Dorian challenges Basil: "So you think it is only God who sees the soul, Basil? Draw the curtain back, and you will see mine." Basil hesitates, and Dorian tears the curtain from its rod and flings it to the floor. Basil is horrified to see the hideous face in the painting with its evil grin. The face is recognizable as Dorian's, but it is aged and corrupt. Basil is overcome by "disgust and loathing" and asks Dorian to explain what the image in the portrait means.
Dorian recalls the wish that he made that fateful day in Basil's studio, and Basil is horrified and incredulous. Basil tries to rationalize the change in the portrait: Mildew has transformed the portrait, or perhaps the paints were fouled. Besides, Dorian had told him that he destroyed the painting. Dorian corrects him: "I was wrong. It has destroyed me." He bitterly asks if Basil can still see his "ideal" in the portrait. It is, after all, the face of Dorian's soul.
Basil is overcome with the ugliness of the portrait and collapses in a chair. He implores Dorian to pray, pointing out that if Dorian's previous prayer of pride was answered, surely his prayer of repentance will be, too.
Dorian's eyes fill with tears, and he is momentarily filled with despair. "It is too late, Basil," he answers. Basil pleads that it is never too late. They must repent; he, too, is guilty, but they can still be forgiven.
