The fourth episode delves deeper into each character’s past, specially Abby’s, and divulges the true nature of her relationship with Citadel.

Citadel Episode 4 Ending Explained: The spy-thriller series “Citadel” on Prime Video tells the story of Mason Kane and Nadia Sinh, two undercover agents.

Mason and Nadia’s memories fade after a mission goes wrong. They cannot remember their past lives as spies for the secret organization known as Citadel, which was destroyed because one of its agents betrayed the organization.

Eight years later, their paths cross yet again as they try to reconstruct what happened to them and their agency while thwarting the enemy’s attempts to carry out a catastrophic tragedy.

The show, which was created by David Weil, is a high-octane experience that paints an enchanting depiction of the life of a spy while keeping the characters firmly grounded in reality.

Recently the show released its fourth episode and fans became curious to know about its ending. So, here in this article, we’re going to discuss about the Citadel Episode 4 Ending.

In the fourth episode of the spy thriller series “Citadel” on Prime Video, the mystery becomes more and more complicated.

With only two episodes left, the show raises more questions than it answers and leaves viewers wondering who the mole is that brought down the espionage organization.

In the previous episode, Mason became concerned that Nadia might be the one who destroyed everything after talking to an old friend.

He has no choice but to believe her at this time because it’s a criminal’s word on her. The fourth episode delves deeper into each character’s past, specially Abby’s, and divulges the true nature of her relationship with Citadel. Read on to know about the ending of Citadel Episode 4.

Citadel Episode 4 recap in short

Citadel Episode 4
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Carter, the second Citadel operative to survive the collapse of the covert organization, is being held captive in the Manticore black site by Nadia and Mason.

He instantly accuses one of them of being to blame for everything that happened to them as soon as he saw them.

We return in time ten years before the fall during the flashback. Celeste Graham is invited by Nadia, who gives her an important mission.

Mason is skeptical about it and suspects that Celeste may not be the best candidate for the position. When Celeste, who escaped, does not report for weeks on end, he becomes more suspicious.

Mason wanders the building after months without hearing from Celeste, erases her objective and asks a question that makes him reevaluate everything he believed he knew about Nadia.

The Citadel Episode 4 Ending Explained: What Happened At The End Of This Episode?

Citadel Episode 4

Citadel Episode 4 comes to an end with Carter having a confrontation with Mason. He knows exactly what happened during the rescue operation. The ops team was given the secret mission to get the Oz Key from Nadia.

Carter thinks that Mason is defending Nadia and that he made Celeste the victim of his mistake. Nadia can be the mole and now she owns the Oz Key.

Mason asks Carter what he did to betray him in the present, but the agent was really talking about Nadia. He holds her responsible for his imprisonment and believes her to be untrustworthy.

Why did Mason decide to remove Celeste’s memories?

Citadel Episode 4

Before collaborating with Nadia Sinh and ending up saving her life, Celeste Graham worked her way up through the ranks of the Citadel as a low-level agent.

Because Nadia thought she was worthy, she promoted her to the Tier 1 level. This implied that Celeste could be trusted with missions that were more important and dangerous.

She was given the mission to get the Oz Key from the Silje brothers. She pretends to be someone else in order to seduce Anders and win his heart over to her side.

After months of information gathering, Celeste successfully steals the Oz Key, but Danik catches her. He comes near killing her, but the Citadel squad quickly rushes to the scene.

When Celeste asserts her innocence, Mason and Nadia begin to argue. The Oz Key was stolen by Celeste and found in her backpack by the Citadel crew.

The team leader received a message from a Level 1 officer asking them to steal the Key and bring it to the officer secretly.

Being the only person with access to everybody’s chats and phone calls, Carter found out about it. Mason came to the conclusion that Nadia was the one who wrote the message.

Mason did not follow Celeste because he thought she was guilty when he did. He did this because he wanted to blame Celeste and he was concerned that if she wasn’t killed, she might say or do something that would reveal what Nadia did to others.

Well, everything he did was with the intention of saving Nadia.