Forcing the priestess to realise that she is the victim of a huge deception, Norma addresses Adalgisa. (Trio: each sings in succession, beginning with Norma: "Oh! di qual sei tu vittima" / "Oh, you are the victim"; then Adalgisa: "Oh! qual traspare orribile" / "What horror has been revealed"; then the two women together, followed by Pollione alone: "Norma! de' tuoi rimproveri" / "Norma, do not reproach me now", continuing with "Please give this wretched girl some respite"; after which all three repeat their words, singing at first singly, then together.)