Mario Casas as Agent Zeta in the official poster for the 2026 Prime Video movie; a psychological thriller about CNI secrets and Operation Swamp. Mario Casas como el Agente Zeta en el póster oficial de la película de 2026 en Prime Video; un thriller sobre el CNI y la Operación Ciénaga.

Casiel, Salvador, and Iago: The Triangle of Silence and Betrayal in the Ending of ‘Agent Zeta’

Who is Casiel in the movie ‘Agent Zeta’? We analyze the ending of the Prime Video thriller, Salvador’s choices, and how Pilar’s secret transforms a spy mission into a profound family tragedy.

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