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Season 4 – The Diplomat

Play trailer 2:20 Poster for Season 4 – The Diplomat Oct 2026 Drama Mystery & Thriller Play Trailer Watchlist
Watchlist Tomatometer Popcornmeter
96% Tomatometer 27 Reviews 87% Popcornmeter 250+ Ratings
Amid an international crisis, a career diplomat juggles her new high-profile job as ambassador to the United Kingdom and her turbulent marriage to a political star.
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The Diplomat — Season 4

The Diplomat — Season 4

What to Know

Critics Consensus

Between political crises and marriages that could use their own diplomatic intervention, The Diplomat remains a wickedly entertaining game of power, egos, and shifting allegiances.

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Critics Reviews

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Carol Midgley The Times (UK) 3 days ago
Waggeringly moreish with West Wing-ish energy. Go to Full Review Melanie McFarland Salon.com Oct 22, 2026
It’s both entertaining and frightening to see the same actors portray an effective marital alliance devoted to trashing norms and weaponizing American exceptionalism. Go to Full Review Sarah Dempster Guardian Oct 21, 2026
5/5
The tension! The near-cartoonish absurdity! But, as always, it’s the small stuff that proves most captivating: the perpetual microshifts in power; the twinges of affection in the interminable game of 4D chess that is the Wylers’ marriage. Go to Full Review Neely Swanson Beverly Hills Courier 19 hrs ago
For those of you who have yet to partake, this is one of the best series ever produced, ranking up there with The Wire. Go to Full Review Mini Anthikad-Chhibber The Hindu Oct 22, 2026
Sharp suits and sharper intrigue mark the season as three power couples navigate connections, conspiracies and crises in the corridors of power Go to Full Review Alison Rowat The Herald (Scotland) Oct 21, 2026
Like I say, endearingly unhinged. It shouldn’t work, but it does, thanks to the actors involved, the quality of the production, and Cahn’s finely spun dialogue, complete with some damn fine one-liners. Go to Full Review Read all reviews

Audience Reviews

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Ricky F @RickyF 6 hrs ago As is typical of multiple season shows this particular season lapses into a boring and predictable formula of personality and relationship exchanges. Big yawn after episode one. No need to watch further. See more Breck R @coolray1 7 hrs ago I love Keri Russell…smoking hot…and the entire cast is top drawer! Great story line and English setting make the show a real winner!! Breck See more D B @Bruno72 14 hrs ago Excellent show and acting ! Can’t wait for the next season See more Fulltime T @RT53894153 1 day ago I agree with some of the other reviewers that Season 4 was not the best. The dialogue between all 3 of the "power couples" was full of ego, stupid hurt feelings, and no one listened to the point of view of anyone else. The plot didn't travel very far either. Do better next season or drop it. See more Barbara B @GrandmaBB 1 day ago Sooooo great! The thrills grew and grew as season went along. Loved it! See more Robert R @Robert162 1 day ago Excellent. Sitting on the edge of my seat See more Read all reviews
The Diplomat — Season 4

My Rating

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Cast & Crew

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Debora Cahn

Creator

Keri Russell

Kate Wyler

Rufus Sewell

Hal Wyler

David Gyasi

Dennison

Ali Ahn

Eidra Graham

Rory Kinnear

Trowbridge

Episodes

Episode 1 Aired Oct 15, 2026 Windsor 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. Details Episode 2 Aired Oct 15, 2026 Redcoats A shocking security breach sends the administration into crisis as Hal assumes new duties; Trowbridge launches a manhunt and Kate looks to the future. Details Episode 3 Aired Oct 15, 2026 The Typo A budgetary snag threatens to torpedo negotiations, with costly implications for the U.S.; Stuart and Eidra get personal as they weigh their next move. Details Episode 4 Aired Oct 15, 2026 Pagliacci After Hal drops a bombshell that throws the UK alliance into jeopardy, Kate faces mounting pressure to control the damage by any means necessary. Details Episode 5 Aired Oct 15, 2026 Special Envoy Kate contends with her complicity in a stunning political shake-up; a disenchanted Todd explores his options across the pond. Details Episode 6 Aired Oct 15, 2026 The Dead When a dangerous adversary makes its move, Grace issues a hard-line threat to the prime minister, forcing Kate to reckon with her role as the messenger. Details Episode 7 Aired Oct 15, 2026 Phony Negroni Personal and political lives collide and damaging secrets surface when Kate and Hal join Grace and Todd in Italy ahead of the G7 summit. Details Episode 8 Aired Oct 15, 2026 Warships At a meeting of world leaders, a diplomatic breakdown edges the U.S. closer to an international crisis and compels Kate to make a seismic decision. Details

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The Diplomat — Season 4

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The Diplomat — Season 4

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Season Info

Creator
Debora Cahn
Executive Producer
Janice Williams, Keri Russell, Simon Cellan Jones
Network
Netflix
Rating
TV-MA
Genre
Drama, Mystery & Thriller
Original Language
English
Release Date
Oct 15, 2026
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