she loves Radames. Aida and Mereb bribe their way into Amonasro's prison cell, where she is reunited with her father. Mereb hatches a plan to escape with the king during the commotion of Amneris' wedding. To save her father and her nation, Aida must betray the man she loves ("Easy as Life"). Meanwhile, Zoser discovers Radames' affair and warns his son that it could cost him the throne, but Radames no longer shares his father's ambitions ("Like Father, Like Son"). After an emotional bout with his son, Zoser orders his men to find Aida and kill her. At the Nubian camp, Aida receives a written apology from Radames for the thoughtless way he acted upon hearing of Amonasro's capture ("Radames' Letter") and for his lack of showing affection. When Egyptian soldiers arrive seeking Aida, another Nubian, Nehebka, sacrifices herself so that the princess can live. Now even more determined to leave Radames forever, Aida goes to say good-bye to him over Mereb's objections ("How I Know You (Reprise)"). Radames informs Aida that he is calling off the wedding. Aida knows that this would ruin her father's escape and tells him he must go through with it ("Written in the Stars"). Radames agrees, on condition that she escapes to freedom on a boat he will provide. The heartbroken lovers part, but Amneris has overheard their entire conversation and tries to face the fact that her upcoming marriage is a sham ("I Know the Truth"). News of Amonasro's escape disrupts Amneris' wedding. Radames learns the truth of Aida's identity when he arrives at the docks just as she is about to board his boat with her father. Although he is angry that Aida hid this from him, she says she never lied about loving him. In the ensuing chaos, Mereb is mortally wounded by Zoser, and Radames makes possible Amonasro's escape by cutting the rope tied to the dock, but Aida stays with Radames and a dying Mereb. Zoser flees, and Mereb dies in the arms of his kind master and beloved princess. Radames and Aida are then arrested for treason. At the ensuing trial, Pharaoh announces Zoser's apprehension and sentences both Aida and Radames to be buried alive. Amneris foreshadows her role as a future Pharaoh by convincing her father to let the lovers die in the same tomb, an act of mercy for two people she has come to love.