The Diplomat S3

Aidan Turner and Keri Russell in The Diplomat S3
Aidan Turner: Callum Ellis – possible love interest for Kate Wyler (Keri Russell)

Airs: 16 Oct 2025 on Netflix

Aidan Turner in The Diplomat

Plot: The Diplomat is a political thriller series following the fictional Kate Wyler (Keri Russell), a seasoned U.S. diplomat who is thrown into the role of ambassador to the United Kingdom amid an international crisis. As she adjusts to her new place in the spotlight, she is also attempting to defuse an international crisis and forging strategic alliances while managing her deteriorating marriage to fellow career diplomat Hal Wyler (Rufus Sewell).

You can view the new trailer on YouTube: