Series synopsis
The Diplomat is an American drama mystery crime television series that premiered on Netflix on April 20, 2023. It was created by Debora Cahn. It stars Keri Russell, Rufus Sewell, David Gyasi and Ali Ahn.
Japanese Ministry of Foreign affairs diplomat Kosaku Kuroda (Yuji Oda) is dispatched all over the world to protect Japanese interests and citizens.After successfully defeating a kidnapping attempt of Japanese citizen in South America, Kuroda is assigned to protect Foreign Ministry official Shoko Mikami (Tamiyo Kusakari) in San Francisco during a World Trade Organization meeting. He meets informant John (Lee Byung-Hun) who gives details on security arrangements and former diplomat Takeshi Shimomu ...
Premise
Japanese Ministry of Foreign affairs diplomat Kosaku Kuroda (Yuji Oda) is dispatched all over the world to protect Japanese interests and citizens.After successfully defeating a kidnapping attempt of Japanese citizen in South America, Kuroda is assigned to protect Foreign Ministry official Shoko Mikami (Tamiyo Kusakari) in San Francisco during a World Trade Organization meeting. He meets informant John (Lee Byung-Hun) who gives details on security arrangements and former diplomat Takeshi Shimomura (Teruyuki Kagawa) who worked with Kuroda at the Mexican Embassy 11 years ago.With the help of the information received from John, diplomat Kosaku Koroda is able to prevent an attack on Shoko Mikami by extremists, but as he investigates how the attacker knew of Mikami's movements, Takeshi Shimomura jumps off a building to his death.Meanwhile, a suspect emerges in the murder of a university professor in Japan that took place recently.
Premise: No alliance lasts forever.
Cast and characters
Leading cast
- Keri Russell as Ambassador Kate Wyler
- Rufus Sewell as Hal Wyler
- David Gyasi as Foreign Secretary Austin Dennison
- Ali Ahn as Eidra Park
- Rory Kinnear as Prime Minister Nicol Trowbridge
- Ato Essandoh as Stuart Hayford
- Celia Imrie as Meg Roylin
- Nana Mensah as Billie Appiah
Supporting cast
- Miguel Sandoval as Miguel Ganon
- Jess Chanliau as Ronnie
- Pearl Mackie as Alysse
- Penny Downie as Frances Munning
- Adam Silver as Howard
- Tim Delap as Byron
- Kenichiro Thomson as Martin
- Georgie Henley as Pensy
- Christine Kavanagh as Gwen Hempill
- Tom Mordell as Johnny Regis
- Ro Kumar as Ryan Lutt
- Tegan Farrelly as Emily Carollton
Guest cast
- Celia Imrie as Meg Roylin
- Nana Mensah as Billie Appiah
- Miguel Sandoval as Miguel Ganon
- Jess Chanliau as Ronnie
- Pearl Mackie as Alysse
- Penny Downie as Frances Munning
- Adam Silver as Howard
- Tim Delap as Byron
- Kenichiro Thomson as Martin
- Georgie Henley as Pensy
- Christine Kavanagh as Gwen Hempill
- Tom Mordell as Johnny Regis
Episodes
This series spans 4 seasons with 24 episodes.
| Season | Episodes | First aired | Last aired |
|---|---|---|---|
| Season 0 | 2 | July 18, 2009 | June 25, 2011 |
| Season 1 | 8 | April 20, 2023 | April 20, 2023 |
| Season 2 | 6 | October 31, 2024 | October 31, 2024 |
| Season 3 | 8 | October 16, 2025 | October 16, 2025 |
| Episode | Title | Air date |
|---|---|---|
| 1 | Episode 1 | July 18, 2009 |
| 2 | Episode 2 | June 25, 2011 |
| Episode | Title | Air date |
|---|---|---|
| 1 |
The Cinderella Thing After a hostile attack on a British vessel, seasoned diplomat Kate Wyler assumes a new role in the UK that puts her skills — and marriage — to the test. |
April 20, 2023 |
| 2 |
Don't Call It a Kidnapping As new details about the bombing emerge, Kate struggles to see eye-to-eye with Hal. Prime Minister Trowbridge's fiery remarks at a funeral cause a stir. |
April 20, 2023 |
| 3 |
Lambs in the Dark 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. |
April 20, 2023 |
| Episode | Title | Air date |
|---|---|---|
| 1 |
When a Stranger Calls After rushing back to London, Kate shares her suspicions about the bombing. The search is on for Lenkov — and Roylin. Eidra delivers devastating news. |
October 31, 2024 |
| 2 |
St. Paul's 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. |
October 31, 2024 |
| 3 |
The Ides of March 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. |
October 31, 2024 |
| Episode | Title | Air date |
|---|---|---|
| 1 |
Emperor Dead Amid a growing constitutional crisis, the staff scrambles to stage an impromptu inauguration, while Hal exploits the chaos behind the scenes. |
October 16, 2025 |
| 2 |
Last Dance at the Country Club Kate weighs a compelling offer. Eidra faces scrutiny over fallout from the Roylin debacle. Stuart pitches a proposal that goes far deeper than policy. |
October 16, 2025 |
| 3 |
The Riderless Horse As the nation pauses to mourn, Grace considers the framework of her administration. Private strain threatens Kate and Hal's polished public image. |
October 16, 2025 |
Production
Release
| Original network/platform | Netflix |
|---|---|
| First aired | April 20, 2023 |
| Last aired | October 16, 2025 |
| Runtime | 54 minutes |
| Status | continue |