The Diplomat season 3 trailer reveals Kate and Hal Wyler in the middle of a constitutional crisis as Grace Penn steps into the oval office.
Netflix has dropped the official trailer for Season 3 of The Diplomat, teasing a world in turmoil as Kate Wyler (Keri Russell) and Hal Wyler (Rufus Sewell) navigate their most dangerous political storm yet. The Emmy-nominated series returns October 16, continuing its sharp blend of political intrigue and personal drama.
The new season opens with a full-blown constitutional crisis. Grace Penn (Allison Janney) has officially assumed the presidency following the sudden death of the commander-in-chief. But the transition of power is anything but smooth: Kate has publicly accused Penn of orchestrating a terrorist plot and even admitted she’s after the vice presidency herself. Meanwhile, Hal may have played a role in the president’s death, intensifying the pressure on the couple as they face the fallout.
Despite the chaos, Hal is relentless in pushing Kate toward higher office. This thrusts her into a role she never wanted but one that gives her new freedom, unexpected influence, and tangled relationships. Her friendship with Foreign Secretary Austin Dennison (David Gyasi) deepens, while her uneasy bond with First Gentleman Todd Penn (Bradley Whitford) grows increasingly complicated.
High-Profile Talent Returns
Season 3 reunites viewers with the show’s powerhouse cast, led by Keri Russell, Rufus Sewell, David Gyasi, Ali Ahn, Rory Kinnear, and Ato Essandoh. Returning cast members include Celia Imrie, Michael McKean, Nana Mensah, and Miguel Sandoval.
New episodes also spotlight high-profile guest stars Allison Janney as Grace Penn and Bradley Whitford as First Gentleman Todd Penn, adding even more intensity to the political drama.
Behind the scenes, The Diplomat continues to be guided by creator, showrunner, and executive producer Debora Cahn. Executive producers include Janice Williams, Keri Russell, Alex Graves, Peter Noah, and Eli Attie, with Graves also directing episodes.
“Kate is at her best in a crisis”
In an interview with Tudum, Cahn teased what fans can expect from the upcoming season: “Kate is at her best in a crisis.” That insight seems especially fitting as Season 3 promises high-stakes confrontations, personal betrayals, and the blurred line between loyalty and ambition.
With its mix of sharp political storytelling and layered character work, The Diplomat has become one of Netflix’s most compelling dramas. Season 3 looks set to raise the stakes once again as Kate and Hal face the ultimate test of power, marriage, and survival.
The Diplomat Season 3 premieres October 16, exclusively on Netflix.
