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The Best Episodes of The Diplomat

Every episode of The Diplomat ranked from best to worst. Let's dive into the Best Episodes of The Diplomat!

Binge this in 1d 1h•Peaking at 9.2/10

Amid an international crisis, a US diplomat contends with her high-profile job as ambassador to the UK and her strained marriage to a political star.

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Episode Rankings

  1. #1 Fan Favorite
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    The Diplomat Season 4 Episode 1 - Windsor
    9.2/10(5 votes)

    S4:E1

    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.

    Director:Alex Graves
    Writer:Unknown

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  2. The Diplomat Season 4 Episode 6 - The Dead
    9.1/10(4 votes)

    S4:E6

    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.

    Director:Tucker Gates
    Writer:Julianna Dudley Meagher

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  3. The Diplomat Season 4 Episode 8 - Warships
    9.1/10(4 votes)

    S4:E8

    At a meeting of world leaders, a diplomatic breakdown edges the US closer to an international crisis — and compels Kate to make a seismic decision.

    Director:Alex Graves
    Writer:Debora Cahn

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  4. The Diplomat Season 4 Episode 5 - Special Envoy
    9.0/10(4 votes)

    S4:E5

    Kate contends with her complicity in a stunning political shake-up, while a disenchanted Todd explores his options across the pond.

    Director:Tucker Gates
    Writer:Eli Attie

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  5. The Diplomat Season 2 Episode 6 - Dreadnought
    8.8/10(2695 votes)

    S2:E6

    Kate puts her best foot forward after pillow talk with Hal forces her to face hard truths, and Vice President Penn offers a blunt lesson in geopolitics.

    Director:Alex Graves
    Writer:Debora Cahn

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  6. The Diplomat Season 4 Episode 2 - Redcoats
    8.8/10(4 votes)

    S4:E2

    A shocking security breach sends the administration into crisis as Hal assumes new duties. Trowbridge launches a manhunt, and Kate looks to the future.

    Director:Alex Graves
    Writer:Debora Cahn

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    The 20 WORST Episodes of The Diplomat

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  7. The Diplomat Season 4 Episode 4 - Pagliacci
    8.8/10(4 votes)

    S4:E4

    After Hal drops a bombshell that throws the UK alliance into jeopardy, Kate faces mounting pressure to control the damage by any means necessary.

    Director:Liza Johnson
    Writer:Peter Noah

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  8. The Diplomat Season 1 Episode 8 - The James Bond Clause
    8.6/10(3121 votes)

    S1:E8

    In London, Hal's actions cause friction as Kate heads to Paris with Dennison to get a handle on the Lenkov situation, which soon takes a shocking turn.

    Director:Alex Graves
    Writer:Debora Cahn

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  9. The Diplomat Season 4 Episode 7 - Phony Negroni
    8.6/10(4 votes)

    S4:E7

    Personal and political lives collide — and damaging secrets surface — when Kate and Hal join Grace and Todd in Italy ahead of the G7 summit.

    Director:Alex Graves
    Writer:Anna Hagen

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  10. The Diplomat Season 2 Episode 5 - Our Lady of Immaculate Deception
    8.5/10(1777 votes)

    S2:E5

    Vice President Grace Penn arrives in London with an agenda — and advice — as fallout from Roylin's bombshell affects Kate's relationship with Trowbridge.

    Director:Alex Graves
    Writer:Anna Hagen

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  11. The Diplomat Season 3 Episode 1 - Emperor Dead
    8.4/10(1754 votes)

    S3:E1

    Amid a growing constitutional crisis, the staff scrambles to stage an impromptu inauguration, while Hal exploits the chaos behind the scenes.

    Director:Alex Graves
    Writer:Debora Cahn

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  12. The Diplomat Season 2 Episode 4 - The Other Army
    8.3/10(1684 votes)

    S2:E4

    Kate proposes a unique solution to the Roylin problem. A risky plan unfolds at the prime minister's event in Scotland. Stuart confronts his feelings.

    Director:Tucker Gates
    Writer:Unknown

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  13. The Diplomat Season 3 Episode 6 - Amagansett
    8.3/10(1472 votes)

    S3:E6

    At an emergency strategy session, Grace weighs unthinkable choices, while Kate rolls the dice on a gamble that could alter the course of history.

    Director:Liza Johnson
    Writers:Debora Cahn, Peter Ackerman

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  14. The Diplomat Season 3 Episode 8 - Schrodinger's Wife
    8.3/10(1723 votes)

    S3:E8

    Kate must use all her leverage and political instincts to avert a catastrophe at a high-stakes summit — with the fate of nations hanging in the balance.

    Director:Alex Graves
    Writer:Debora Cahn

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  15. The Diplomat Season 1 Episode 3 - Lambs in the Dark
    8.2/10(2572 votes)

    S1:E3

    At Winfield, President Rayburn's plans in the Gulf have the staff on edge as tensions between a determined Hal and a strong-willed Kate come to a head.

    Director:Andrew Bernstein
    Writer:Debora Cahn

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  16. The Diplomat Season 4 Episode 3 - The Typo
    8.2/10(4 votes)

    S4:E3

    A budgetary snag threatens to torpedo negotiations, with costly implications for the US. Stuart and Eidra get personal as they weigh their next move.

    Director:Liza Johnson
    Writer:Jessica Brickman

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  17. The Diplomat Season 1 Episode 4 - He Bought a Hat
    8.0/10(2259 votes)

    S1:E4

    As Rayburn's rep takes a hit, Kate drops in on Dennison's private meeting at the UK Foreign Office and learns startling information about the attack.

    Director:Andrew Bernstein
    Writer:Amanda Johnson-Zetterström

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  18. The Diplomat Season 1 Episode 6 - Some Lusty Tornado
    7.9/10(2094 votes)

    S1:E6

    To appease Trowbridge, Kate seeks Hal's help with a high-profile visitor and consults an informed source in secret as complicated feelings begin to grow.

    Director:Liza Johnson
    Writer:Anna Hagen

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  19. The Diplomat Season 1 Episode 7 - Keep Your Enemies Closer
    7.9/10(2091 votes)

    S1:E7

    After a sit-down with a Russian ambassador leads to new intel and mixed messages, Kate takes a trip to the Oval Office and reconnects with an old friend.

    Director:Alex Graves
    Writer:Peter Noah

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  20. The Diplomat Season 2 Episode 1 - When a Stranger Calls
    7.9/10(1868 votes)

    S2:E1

    After rushing back to London, Kate shares her suspicions about the bombing. The search is on for Lenkov — and Roylin. Eidra delivers devastating news.

    Director:Alex Graves
    Writer:Unknown

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  21. The Diplomat Season 2 Episode 2 - St. Paul's
    7.9/10(1699 votes)

    S2:E2

    Eidra helps sneak an unannounced guest into Grove's funeral, Kate realizes she might have made a bad call before the bombing, and Stuart speaks his mind.

    Director:Alex Graves
    Writer:Peter Ackerman

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  22. The Diplomat Season 1 Episode 5 - The Dogcatcher
    7.8/10(2166 votes)

    S1:E5

    Tempers flare at Chevening House, where an unexpected guest's arrival sends Kate and Dennison scrambling for a resolution. Hal makes a new connection.

    Director:Liza Johnson
    Writer:Unknown

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  23. The Diplomat Season 2 Episode 3 - The Ides of March
    7.8/10(1637 votes)

    S2:E3

    A lavish Fourth of July party gives Kate a chance to help Dennison, who sees an opportunity after the prime minister's announcement about Lenkov.

    Director:Tucker Gates
    Writer:Peter Noah

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  24. The Diplomat Season 3 Episode 2 - Last Dance at the Country Club
    7.8/10(1479 votes)

    S3:E2

    Kate weighs a compelling offer. Eidra faces scrutiny over fallout from the Roylin debacle. Stuart pitches a proposal that goes far deeper than policy.

    Director:Alex Graves
    Writer:Anna Hagen

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  25. The Diplomat Season 3 Episode 3 - The Riderless Horse
    7.8/10(1392 votes)

    S3:E3

    As the nation pauses to mourn, Grace considers the framework of her administration. Private strain threatens Kate and Hal's polished public image.

    Director:Tucker Gates
    Writer:Eli Attie

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Best Episodes Summary

"Windsor" is the best rated episode of "The Diplomat". It scored 9.2/10 based on 5 votes. Directed by Alex Graves and written by Unknown, it aired on 10/15/2026. This episode scored 0.1 points higher than the second highest rated, "The Dead".