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The Diplomat S4E1 — Windsor
9.2
The Diplomat•Season 4•Episode 1

Windsor

9.2/10 · 5 votesOct 15, 202649 min

Ranked #1 of 8 in Season 4•+0.3 vs season avg

Discussion

On an unplanned stopover at Windsor Castle, Kate grows wary of Hal and Grace's dynamic as she tries to contain the fallout from their covert actions.

Directed byAlex Graves
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Season 4 Episodes8

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Cast8

Keri Russell

Keri Russell

Ambassador Kate Wyler

Rufus Sewell

Rufus Sewell

Hal Wyler

Ali Ahn

Ali Ahn

Eidra Park

Rory Kinnear

Rory Kinnear

Prime Minister Nicol Trowbridge

Ato Essandoh

Ato Essandoh

Stuart Hayford

Bradley Whitford

Bradley Whitford

Todd Penn

Allison Janney

Allison Janney

President Grace Penn

Nana Mensah

Nana Mensah

Billie Appiah

Crew4

A

Alex Graves

Director

Debora Cahn

Debora Cahn

Teleplay

Debora Cahn

Debora Cahn

Story

A

Anna Hagen

Story

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Episode Summary

"Windsor" is episode 1 of The Diplomat season 4. It scored 9.2/10 from 5 votes, ranking #1 of 8 episodes this season (season average 8.8). Directed by Alex Graves, it aired on October 15, 2026.

Next: E2 · RedcoatsBest of Season 4