Libretto
Act 1
Scene I: The crowd is agitated about a series of recent mysterious murders. The police calm the crowd. The goldsmith Cardillac enters the scene and the atmosphere becomes hushed. The Lady asks the Cavalier about the goldsmith Cardillac, and the Cavalier tells of the goldsmith and his priceless jewelry. The Lady promises the Cavalier a tryst that evening if he can bring her Cardillac's most beautiful work. Scene II: The Lady and the Cavalier enjoy their tryst and the Cavalier delivers one of Cardillac's belts. A masked figure steals into the bedroom and fatally stabs the Cavalier. The Lady faints and the mysterious figure leaves with the belt.
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Act 2
The Gold Merchant mentions to Cardillac the latest murder that involved the theft of a recent work of Cardillac. The Gold Merchant has his suspicions about the identity of the murderer. Cardillac orders his daughter to watch over his work. She does so and awaits her lover, the Officer. Cardillac returns, and it becomes clear that he values the articles he has crafted more than he does his daughter. Cardillac then meets the King and offers to create his greatest work of art for him. The Officer enters to ask Cardillac for his daughter's hand in marriage, and Cardillac consents. Though the Officer realizes how much Cardillac values his creations over his own daughter, he offers money for one of the goldsmith's chains. After the Officer leaves, Cardillac indicates that he himself is the murderer.
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Act 3
In a tavern, the Officer wears the chain, presenting himself as a target for the murderer. Cardillac enters and wounds the Officer, but the Officer beats back the attack and holds on to the chain. He advises Cardillac to flee. The Gold Merchant then brings on a crowd and accuses Cardillac of the murders. Cardillac is brought in, followed by his daughter. The Officer defends Cardillac, rebuts the Gold Merchant's accusation, and accuses the Gold Merchant of being the murderer's accomplice. In the ensuing ensemble, Cardillac's daughter realizes her father is the murderer. The crowd sings Cardillac's praises, but as they continue, his words make them wonder about the identity of the murderer. Finally, Cardillac reveals to the crowd that he is the murderer. They demand he repent his crimes, but he makes no such gesture. The crowd then lynches Cardillac. With his final gesture before dying, he reaches out for the chain around the Officer's neck, not his daughter. The Officer and Cardillac's daughter swear mutual devotion.
