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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 25 Reviews 89% 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

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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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Melanie McFarland Salon.com 1 day ago
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 2 days ago
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
Ben Travers IndieWire 2 days ago
C
Without the usual marriage drama, the political drama edges too close to a polite simulation of what’s really going on in Washington, which spoils any hope of suspending disbelief. Go to Full Review
Mini Anthikad-Chhibber The Hindu 2 days ago
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) 2 days ago
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
Jack Seale Radio Times 2 days ago
5/5
Frightfully clever, believably flawed people trying to work out what to say and do next to avert catastrophe feels more relevant than ever, and The Diplomat has honed it to a fine art. Go to Full Review
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Audience Reviews

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Michael N @RT24430416 7 hrs ago The endless psycho babble is boring. Obviously written by a PhD in Women's Psychosis in Marriage dissertation at a small, unaccredited college in Kenya somewhere. This season is obviously written by a woman with problems. See more william W @RT30007459 10 hrs ago The show is excellent. Its willingness to engage with complex terminology is highly commendable. I particularly appreciate the commitment to realism, it effectively illustrates Penn’s evolution into an emerging tyrant rather than presenting her as a one dimensional antagonist. I highly recommend this series and would certainly watch it again. See more Brian S @RT05058718 11 hrs ago I'm really hoping for a season 5. This is one of the best shows I've watched on Netflix, and can't wait for more!! See more Kevin W @bella123 12 hrs ago Great writing and acting See more Jeannette Y @RT11806713 13 hrs ago Season 4 is easily my favorite season of The Diplomat. The political tension is gripping, but Kate’s growth is what makes it exceptional. Despite the fear, uncertainty and pressure to follow protocol, she keeps fighting for what she believes is right, even when it could cost her marriage and career. Keri Russell makes that struggle feel so real. Kate is frustrated, afraid and sometimes isolated. Watching her conviction give others the courage to reconsider their own choices was incredibly powerful (Almost spoiler alert) Her relationship with Hal adds another layer, whether they can truly trust each other and be loyal regardless of the situation. The final scene stayed with me. Kate has never looked more like a leader. Outstanding performances and a season that deserves a continuation. Netflix DO NOT CANCEL IT! See more Jarrett L @Jarrettelane 14 hrs ago Binge watch. 9/10 See more Read all reviews
The Diplomat — Season 4

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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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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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