Act 2, Part 3
Storming into the room and seeing the face of the Beggar Woman clearly with the oven's light, Todd realizes in horror that she is in fact his wife Lucy. When Mrs. Lovett said that Lucy had poisoned herself, Todd interpreted this to mean his wife was dead. Todd now furiously accuses Mrs. Lovett of deceiving him, but Mrs. Lovett maintains her guiltlessness, saying that although Lucy had indeed taken poison, she did not die but instead went insane. Lovett says she withheld the whole truth from Todd in order to spare his feelings because she loves him.
Todd feigns calm forgiveness, waltzing Lovett over to the huge oven, abruptly hurling her into the fire, and slamming the doors shut. Todd then sinks to the floor and cradles his deceased wife in his arms. Toby, driven completely insane and with his hair now white from shock, reappears from the shadows, picks up Todd's fallen razor, and strikes at Todd's throat.
As Anthony, Johanna, and some constables break into the bakehouse, Todd falls dead and Toby drops the razor, heedless of the others, while beginning to absentmindedly parody the motions of turning a meat grinder ("Final Scene").
The company assembles one last time to sing "The Ballad of Sweeney Todd." As the resurrected ghosts of Todd and Mrs. Lovett rise from their graves, they conclude that the capability for revenge is within all of us. The company exits with Todd and Mrs. Lovett being the last. Todd pauses at the large iron door at the back of the stage to look at Mrs. Lovett one final time before slamming the door in the audience's face