Intervention

Micheletto Corella confesses to Ezio Auditore that to make sure Pietro died he had poisoned his wine. After dealing with him Ezio orders his apprentices to cut down Pietro from the cross.

Dialogue
Two recruits throw knives at the rope holding Pietro to his cross. Ezio lifts him from the ground as he appears too weak. Ezio runs through the crowd while carrying Pietro. A few mercenaries enter the Colosseum;
 * Ezio: Cut him down. (to his recruits)
 * Pietro: This was not in the rehearsal!
 * Ezio: Hold off the guards.
 * Mercenary: Ezio, we are here to help!
 * Ezio: Stop the guards!
 * Pietro: Who are you?
 * Ezio: Your savior.

The Doctor
Ezio get Pietro to a doctor near the Colosseum;
 * Ezio: He has been poisoned.
 * Doctor: That pallor. Cantarella. Drink this.
 * He gives Pietro a vial


 * Ezio: Hurry!
 * Doctor: Give him a moment.
 * After sometime,


 * Pietro: I feel slightly better.
 * Doctor: Leeches will lead to a full recovery.
 * Pietro: I cannot thank you enough. I---
 * Ezio: The Key to the Castel Sant'Angelo. Now.
 * Pietro: What are you talking about? I'm simply a poor actor--
 * Ezio: Cesare knows about you and Lucrezia.
 * Pietro: Here.

Don't I know you?
Pietro hands over his key to Ezio. Ezio then notices a familiar thief
 * Ezio: ''Un momento! (Hey!) You were at the Villa Auditore during the attack!
 * The thief starts to run away. The guards around the Colosseum try to attack Ezio. However he tries to catch the fleeing thief.

Ezio takes the letter the thief was holding. He notices the Seal of Borgia and realises that this thief was the traitor all along. Ezio threatens to kill him with his hidden blade.
 * Ezio: Why did you run?
 * Thief: I--
 * Ezio: ''You are the traitor, not Machiavelli. (Pointing his hidden blade at the thief's throat.)
 * Thief: Long live the Borgia! (Pierces himself in the throat with Ezio's blade.)
 * Ezio: Merda! I was right. I have to stop Volpe before he gets to Machiavelli.

Volpe and Machiavelli
Ezio hurries to Tiber Island to stop Volpe from killing Machiavelli. When he reaches Volpe is ready to strike Machiavelli from behind. Ezio approches him;
 * Ezio: I have discovered the traitor.
 * Volpe: What?
 * Ezio: One of our men, he was at the Villa attack. Here, he carried this letter. (Shows the letter taken from the thief.)
 * Volpe: My God!
 * Machiavelli: This is good news.
 * Ezio: More than you know.
 * Volpe: I am once again in your debt, Ezio.
 * Ezio: What debt is there amongst friends who trust one another?
 * Volpe: Yes. Thank you for relaying the message in. (to Machiavelli) Come Niccolò, it has been far too long since we've talked.
 * Machiavelli: I heard the Colocesseum Passion Play took an unexpected turn this evening.
 * Volpe: Really?
 * Machiavelli: It seems Gesù Cristo was resurrected three days early.

Outcome
Ezio Auditore gets the key of the Castel Sant'Angelo and the traitor who has been informing the Borgia of the Assassins every move is killed. Machiavelli gains La Volpe's trust.

Trivia
To achieve full synchronization the player should not swim while returning to Tiber Island.