Period dramas at their finest perform an extraordinary emotional feat. They offer a complete escape from the present, while simultaneously highlighting how certain aspects of human nature remain unchanged. Despite our progress socially and technologically, we continue echoing past quarrels, revisiting old habits, and enjoying the timeless, simple pleasures that those before us cherished. BritBox’s new drama Outrageous captures this compellingly, providing entertainment that is both vibrant and deeply resonant.

Launching on June 19, this new series dives into the intriguing true tale of the Mitford sisters, British aristocrats who notoriously found themselves on different sides of the political divide as World War II loomed. While some sisters became staunch fascists, others leaned towards communism, and a few sat somewhere between adoration for Hitler and admiration for Lenin. By bringing these real-life stories to the screen, Outrageous not only acquaints contemporary viewers with these captivating characters but also explores the emotional devastation of familial division over politics. The series enhances this narrative with striking elegance and impressive new talent.

Inspired by Mary S. Lovell’s 2003 biography The Sisters, Outrageous on BritBox begins in the year 1931, a peaceful chapter for the Mitfords. The eldest, Nancy (played by Bessie Carter), a writer recognized for her sharp takes on the “Bright Young Things,” provides a witty commentary as she observes early cracks in her seemingly typical aristocratic family. Diana (Joanna Vanderham), her glamorous sister, is married to the affluent and charismatic Bryan Guinness (Calam Lynch), yet she yearns for more. Diana soon engages in a heated affair with the married politician Oswald Moseley (Joshua Sasse), who is inconveniently the leader of the British Fascist Party.

Diana’s decision to blow up her society marriage would have massive repercussions for her family in any era. However, because this is the 1930s and Moseley is about to become the face of fascism in Britain, the ripple effect of her romance has far more sinister implications.

As Nancy shows us, Diana isn’t the only Mitford sister developing an interest in politics. Quirky sister Unity (Shannon Watson) also finds herself in fascism’s thrall, although she becomes particularly obsessed with Adolf Hitler. We watch as Unity evolves from an awkward teen talking to her pet rat to a chilling cheerleader for Nazism. While Nancy initially laughs this off, younger sister Jessica (Zoe Brough) watches on with apprehension. Unlike her older sisters, Jessica — known as “Decca” to the family — sees the plight of the working class and believes communism is the only answer.

Now, if you know anything about the Mitfords, it’s probably thanks to Nancy’s books, which were recently adapted by Amazon in their three-part miniseries The Pursuit of Love, or the fun fact that Diana, Unity, and Jessica are the inspiration behind the Black sisters in Harry Potter. (Diana is Narcissa Malfoy, Unity is Bellatrix Lestrange, and Jessica is Andromeda Tonks.) Most Mitford-centered projects focus on just these four siblings. Outrageous, on the other hand, also makes time for the lesser known Mitfords. Steady, sensible Pamela (Isobel Jesper Jones), lone brother Tom (Toby Regbo), and baby sister Deborah (Orla Hill) all factor into the story, further grounding the story into something far more familiar in 2025 than you might expect.

In the last ten years, politics both here and abroad have become increasingly polarized, pushing folks who align themselves on the left or right further and further apart. I can’t think of a single family that hasn’t felt its fair share of friction at the holiday table or a single time more primed for a Mitford sisters drama. Outrageous beautifully delves into the unbearable state of loving someone whose politics you absolutely hate.

What makes Outrageous such a great watch, though, is it balances these serious issues with pulpy personal drama. Nancy’s love life is a relatable hoot, full of awkward missed signals and cocktail-infused gossip sessions. Diana is a fashion queen, sauntering through scenes like a Hollywood siren. A cutesy love triangle emerges between two sisters later in the series and Decca spends as much time swooning over a handsome Communist she’s never met as she does arguing the party’s platform. The story of Outrageous is deathly serious, but the vibe is still somehow effervescently fun. This balance makes it intoxicating.

Outrageous also feels like a potentially pivotal moment in period drama land. BritBox has been producing originals since its 2018 Bletchley Circle reboot, but Outrageous has a style, a swagger, and a cast that stands out. Bessie Carter, Zoe Brough, and Calam Lynch are just a few of the Outrageous stars who feel like the British TV icons of tomorrow, while recent drama school grad Shannon Watson throws down a hell of a debut performance as the unhinged Unity. Outrageous isn’t just a show I’d recommend only to the Anglophiles in my life, but the pop culture obsessives, too.

Outrageous conjures up an impressive feat by balancing multiple acts. It’s a historic drama that speaks to the here and now, a serious exploration of politics that’s also full of fluff, and a classic British drama that feels young and cool. Outrageous is the platonic ideal of what the period drama can be.

The first two episodes of Outrageous premiere on Wednesday, June 18 on BritBox.