The Diplomat — Season 3
No alliance lasts forever.
About this season
Ambassador Kate Wyler lives the particular nightmare that is getting what you want. She just accused Vice President Grace Penn of hatching a terrorist plot and admitted she's after the VP's job. But now the President is dead, Kate's husband Hal may have inadvertently killed him, and Grace Penn is leader of the free world. None of this slows Hal's campaign to land Kate the vice presidency. Kate steps into a role she never wanted, with a freedom she never expected, an increasingly complicated friendship with Foreign Secretary Austin Dennison, and an unnerving bond with First Gentleman Todd Penn.
Episodes (8)
1. Emperor Dead
7.6Aired 16 October 2025 • 42 min
Amid a growing constitutional crisis, the staff scrambles to stage an impromptu inauguration, while Hal exploits the chaos behind the scenes.
2. Last Dance at the Country Club
7.3Aired 16 October 2025 • 47 min
Kate weighs a compelling offer. Eidra faces scrutiny over fallout from the Roylin debacle. Stuart pitches a proposal that goes far deeper than policy.
3. The Riderless Horse
7.6Aired 16 October 2025 • 52 min
As the nation pauses to mourn, Grace considers the framework of her administration. Private strain threatens Kate and Hal's polished public image.
4. Arden
7.6Aired 16 October 2025 • 51 min
Kate's unique role grants her access to anyone she wants — except the one person she needs. Dennison puts actionable intelligence to personal use.
5. Birdwatchers
7.7Aired 16 October 2025 • 43 min
Forced to play the perfect couple, Kate and Hal confront a looming problem in international waters and a development that could torpedo U.S. credibility.
6. Amagansett
7.9Aired 16 October 2025 • 50 min
At an emergency strategy session, Grace weighs unthinkable choices, while Kate rolls the dice on a gamble that could alter the course of history.
7. PNG
7.7Aired 16 October 2025 • 52 min
Sequestered inside Winfield House as embassies go on alert and allies fall silent, Kate and Callum race to contain a potential disaster.
8. Schrodinger's Wife
8.1Aired 16 October 2025 • 55 min
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.