Netflix's hit political thriller, The Diplomat, has officially made its highly anticipated return with season four – and fans are losing sleep binge-watching the new eight-part series.
The Emmy-nominated show stars Keri Russell as Kate Wyler, the US Ambassador to the UK who continually finds herself juggling intense international crises with her turbulent marriage to Vice President Hal Wyler (Rufus Sewell).
© Nick Wall/Netflix
It's no surprise that viewers are hooked on the new season. Fans have been eagerly awaiting answers for a whole year following season three's jaw-dropping finale, which saw Kate uncover a shocking betrayal involving President Grace Penn (Allison Janney) and her own husband.
As the show storms Netflix's Top Ten TV chart, find out what viewers have said about the new season.
What is The Diplomat season 4 about?
Season four sees Kate Wyler attempt to keep both her marriage to Hal, and the relationship between the US and the UK, intact.
The official synopsis reads: "In Season 4 of The Diplomat, two marriages threaten to eat each other alive. One catastrophic moment shatters the fragile peace Kate Wyler brokered between the US and UK, as well as the crumbling marriage she's trying to save. While she fights to stem the bleeding, President Grace Penn and VP Hal Wyler's conspiracy to steal Russia's most powerful weapon could hurtle the United States toward war.
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"Kate and Todd, at best an uneasy pair, unite to stop the Grace-Hal alliance from upending the balance of power abroad and at home"
What have viewers and TV critics said about season 4?
It's safe to say the new episodes have gone down a treat with viewers.
Taking to social media, one person hailed the thriller as "one of the greatest pieces of television I've ever seen," adding: "That was absolutely incredible."
© Nick Wall/Netflix
A second viewer stayed up all night watching the new episodes, writing: "It's 12:45am. I have work in the morning. Season 4 of The Diplomat just dropped. Sleep has been cancelled."
A third fan praised show creator Debora Cahn, writing: "My brain can't comprehend that level of expertise. I didn't think it was possible for #TheDiplomat to get any better but the new season is phenomenal."
© Clifton Prescod/Netflix
The new season has also been met with a flurry of four and five-star reviews from critics. The Telegraph called it "the snappiest political drama on TV" in a glowing four-star review, while RadioTimes.com awarded it five stars, praising the instalment as "sharp, smart and this drama's best series yet."
Who stars in The Diplomat?
Keri Russel (The Americans) leads the cast as Ambassador Kate Wyler, alongside Rufus Sewell (Scoop) as Kate's husband Hal.
© Clifton Prescod/Netflix
They're joined by Allison Janney (The West Wing) as Vice President Grace Penn, David Gyasi (Carnival Row) as Foreign Secretary Austin Dennison and Bradley Whitford (The Handmaid's Tale) as First Gentleman Todd Penn.
Ali Ahn and Rory Kinnear also star.
All four seasons of The Diplomat are available to stream on Netflix.