The Diplomat season 3: Keri Russell returns in Netflix political thriller

Published by Julie de Sortiraparis · Updated on September 25, 2025 at 12:41 p.m. · Published on September 5, 2024 at 05:50 p.m.
The Diplomat season 3, a series by Debora Cahn starring Keri Russell and Rufus Sewell, arrives on Netflix on October 16, 2025. A political thriller of intrigue and international crisis.

The Diplomat, the political drama series created by Debora Cahn, returns to Netflix for a third season. Expected on October 16, 2025, this new salvo of episodes continues the journey of Kate Wyler, played by Keri Russell, an American ambassador faced with international issues and personal dilemmas. With a strong cast led by Rufus Sewell, Allison Janney and David Gyasi, the series continues to explore the tensions at the pinnacle of global power.

La Diplomate season 3 trailer

This trailer unveils a critical new stage for Kate Wyler (Keri Russell), as she confronts political and personal issues of unprecedented intensity. The images herald a suspenseful season in which alliances, rivalries and secrets collide at the pinnacle of global power.

When and where can I see La Diplomate season 3?

La Diplomate season 3 will be available exclusively on Netflix from October 16, 2025.

Synopsis: American ambassador Kate Wyler lands her dream role under tragic circumstances. As Grace Penn (Allison Janney) becomes President of the United States, Kate must contend with her husband Hal's ambitions, a complex friendship with British minister Austin Dennison (David Gyasi) and a troubling relationship with leading gentleman Todd Penn (Bradley Whitford). Between diplomatic crises and intimate intrigues, diplomacy has never seemed so perilous.

The starting point for season 3

In the new season, Kate Wyler finds herself in a paradoxical situation: she gets the role she covets, but under dramatic circumstances. After accusing Vice President Grace Penn (Allison Janney) of being behind a terrorist plot, Kate is faced with an unexpected upheaval: the sudden death of the American president. Her husband, Hal Wyler (Rufus Sewell), is suspected of involvement. Grace Penn becomes president, while Hal lobbies for Kate to become vice-president. Between political intrigue, fragile alliances and complex personal relationships, Kate navigates a diplomatic landscape more dangerous than ever.

A stronger cast for season 3

Alongside Keri Russell and Rufus Sewell, this season welcomes Allison Janney as President Grace Penn and Bradley Whitford as her husband Todd. David Gyasi reprises his role as Austin Dennison, while Ali Ahn, Rory Kinnear and Ato Essandoh complete the cast. Executive production is handled by Debora Cahn, Janice Williams, Alex Graves and Keri Russell herself.

A look back at previous seasons

Season 1 (2023):

In the midst of an international crisis, a seasoned diplomat juggles her new job as ambassador to the UK with her stormy marriage to a political star.

Season 2 (2024):

When an attack in London shatters her world, American diplomat Kate Wyler faces the ultimate test as her suspicions reach the highest levels of the British government.

Who is La Diplomate for?

The series is aimed at fans of political dramas and international thrillers. Viewers who enjoyed House of Cards, Homeland or Madam Secretary should find a mix of diplomatic tension and personal conflict here. With its geopolitical intrigue and insight into power relations, La Diplomate continues to appeal to a wide audience.

The essentials about La Diplomate

The Diplomat is a drama series created by Debora Cahn and released on Netflix in 2023. Starring Keri Russell, it explores the challenges of international diplomacy. Season 3 will be available on October 16, 2025, and a season 4 has already been confirmed.

This article is based on information available online; we have not yet viewed the film or series mentioned.

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Dates and Opening Time
Starts October 16, 2025

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