‘The Diplomat’ returns for an explosive Season 4
‘The Diplomat’ returns for an explosive Season 4
Allison Janney and Bradley Whitford are now series regulars as the Penns take on much bigger roles this season.
International diplomacy is complicated enough without having to worry about your husband conspiring with the president to potentially start World War III, but that’s exactly the mess Kate Wyler finds herself in when “The Diplomat” returns for Season 4. Premiering Thursday, Oct. 15 on Netflix, the political thriller raises the stakes as Kate (played by Keri Russell) navigates a crumbling marriage, a fragile relationship between the United States and the United Kingdom, and a dangerous scheme involving Russia’s most powerful weapon. Don’t miss any of the political backstabbing, marital fireworks, and international intrigue with a subscription to Netflix.
How to watch ‘The Diplomat’ Season 4
- When: Thursday, Oct. 15, 2026, at 3:01 a.m. ET
- TV: Netflix
- Stream: Watch with a subscription to Netflix.
- From anywhere: Watch with a subscription to a VPN.
Everything you need to know about ‘The Diplomat’ Season 4
When will ‘The Diplomat’ Season 4 come out?
“The Diplomat” Season 4 drops all eight episodes on Thursday, Oct. 15 on Netflix at 3:01 a.m. ET.
Can you watch ‘The Diplomat’ Season 4 for free?
No, not right now. Netflix doesn’t offer a free trial in the U.S., so you’ll need a paid subscription to watch the newest season of “The Diplomat.” Netflix is currently offering free trials in other territories around the world, so it is possible that they will be offered in the U.S. at some point, but as of now, you will have to subscribe to catch the new season of “The Diplomat.”
Netflix offers three different subscription options, starting with the Standard With Ads plan for $9 monthly, then moving up to the Standard plan for $20 per month, and finally the Premium plan, which costs $27 every month.
Netflix
Netflix is a leading subscription-based video streaming service that offers on-demand access to an extensive library of over 3,000 movies, 2,000+ TV shows, and a growing collection of acclaimed Netflix originals. Renowned for producing groundbreaking content, Netflix has become a cultural powerhouse with hit originals like “Stranger Things,” “Wednesday,” “Squid Game,” “The Crown,” “Tiger King,” “Bridgerton,” “The Witcher,” and “Black Mirror.”
Watch the trailer for ‘The Diplomat’ Season 4
What is ‘The Diplomat’ Season 4 about?
Spoiler Alert. There are spoilers below for previous seasons of ‘The Diplomat.’
“The Diplomat” Season 4 picks up with Kate and Hal’s marriage in a very weird place. Grace Penn is now president, Hal is vice president, and Kate starts to realize Hal may have double-crossed her with Grace. At the same time, Todd Penn has noticed just how close Grace and Hal are getting. So the season basically locks Kate, Hal, Grace, and Todd into one increasingly messy political/marital dynamic that is bound to come to a head at some point.
There’s also a much bigger international problem. Something massive shatters the fragile peace Kate built between the U.S. and U.K., while Grace and Hal’s plan to steal Russia’s most powerful weapon risks pushing the United States toward war. That leaves Kate and Todd, not exactly natural allies, working together to stop the Grace-Hal partnership from blowing up the balance of power both abroad and at home.
Who’s in the cast of ‘The Diplomat’ Season 4?
Keri Russell returns as Ambassador Kate Wyler, with Rufus Sewell back as her husband, Hal Wyler, who is now vice president. Allison Janney returns as President Grace Penn (she’s perfect), and Bradley Whitford is back as First Gentleman Todd Penn. Both have been promoted to series regulars for Season 4, so you’ll see a lot of them. Nana Mensah has also been bumped up to series regular as White House Chief of Staff Billie Appiah.
The Diplomat
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.