Prime Video’s Ambitious Spy Thriller Has Richard Madden, Priyanka Chopra and Two International Spin-Offs — but Somehow Still Flew Under the Radar

Prime Video has no shortage of action thrillers competing for attention, but one of its biggest swings remains surprisingly easy to overlook.

Citadel was designed to be much more than another six-episode spy series.

Led by Richard Madden and Priyanka Chopra Jonas, the globe-trotting thriller combines blockbuster action, secret organizations, an amnesiac agent and an interconnected story that has already expanded into two international spin-offs.

It didn’t receive the same critical acclaim as shows such as Reacher or Slow Horses.

But in terms of sheer ambition, few recent streaming thrillers have attempted anything quite like it.

Richard Madden Wakes Up Without His Life as a Spy

At the center of the story is Madden’s character, a former intelligence operative who has lost his memory.

His past as a highly trained spy has effectively disappeared.

That creates an immediate mystery as pieces of his previous life begin returning and the dangerous world he once occupied comes looking for him again.

It’s a premise with obvious echoes of the Bourne franchise, but Citadel uses the setup as an entry point into something much larger.

Alongside Priyanka Chopra Jonas, Madden is pulled into globe-spanning missions with enormous stakes, elaborate action sequences and the kind of production scale more commonly associated with theatrical spy movies.

For viewers coming from Reacher, the action is one of the biggest attractions.

But Citadel isn’t trying simply to replicate Amazon’s other hit.

This Was Built as an Entire International Universe

The scale of Prime Video’s plan becomes clearer when the spin-offs are included.

Rather than creating another American offshoot with familiar characters, the franchise expanded internationally.

Italy received Citadel: Diana.

India received Citadel: Honey Bunny.

Both contain storylines connected to the mythology of the central series, expanding the same fictional espionage universe through different countries, characters and languages.

That makes the project particularly unusual.

Many successful shows eventually produce spin-offs. Far fewer begin with the apparent intention of building a globally interconnected television franchise across completely different markets.

The World Is Bigger Than One Secret Agent

That broader mythology also separates Citadel from more conventional action procedurals.

The series establishes powerful organizations operating around the world, creating the impression that Madden’s character is only one participant in a much larger conflict.

Every revelation can potentially open another part of that universe.

For viewers who enjoy self-contained missions and straightforward stories, that approach may not be ideal.

But anyone who enjoys conspiracies, hidden organizations and gradually expanding mythology may find considerably more to explore.

The spin-offs reinforce that idea by showing that the central series isn’t the entire story.

It’s merely one window into it.

Its Biggest Ambition May Also Explain the Divided Reaction

Citadel never became the runaway phenomenon that Reacher has been for Prime Video.

Its reception was more mixed, and its attempt to establish such a large fictional universe inevitably made it a different proposition from a simple, character-driven action thriller.

But that doesn’t mean it deserves to disappear beneath Prime Video’s more recognizable hits.

The series delivers the basic ingredients expected from the genre — dangerous missions, espionage, conspiracies and large-scale action — while attempting something considerably more unusual around them.

And for anyone who watched the original series but never explored further, there are already two connected stories waiting beyond it.

Richard Madden and Priyanka Chopra may be the faces of Citadel, but their story was never intended to stand alone — Prime Video built an entire international spy universe around it, and that enormous ambition may be the best reason to give this overlooked thriller another look.