Yes, Legends is based on a true story. The Netflix series is inspired by a real, top-secret HM Customs unit that sent officers undercover with false identities to infiltrate the international drugs trade in the early 1990s. The full, undramatised account is told by one of those officers, Guy Stanton, in his book The Betrayer, and I had the privilege of narrating the audiobook.
If you’ve just finished the series and want to know what really happened, this is where to go next.
What is Legends about?
Legends arrived on Netflix in May 2026. It’s a six-part drama written by Neil Forsyth, who also wrote The Gold, and it stars Tom Burke and Steve Coogan. It follows a group of Customs officers, not police and not spies, who are handed new identities and told to get close to Britain’s most dangerous drug gangs.
In undercover work, those false identities are called “legends”. That’s where the title comes from.
Is Legends a true story?
Mostly. The unit was real. It was known as Beta Projects, and it ran in the late 1980s and early 1990s, when heroin use in Britain was at its height. Its officers posed as smugglers, money launderers, lorry drivers and yacht skippers, and between them they helped take huge quantities of drugs off the streets.
The series condenses that story and blends several real people into single characters, as dramas do. Tom Burke’s character, Guy, is based on the real Guy Stanton. The book is the version without the dramatic licence.
Who is the real Guy Stanton?
“Guy Stanton” is itself a legend: the name he worked under. He joined Customs as a teenager, became an investigator, and spent years living as a big-time London drug dealer, doing business with heroin suppliers, cartel fixers and British smuggling crews. One mistake could have exposed him.
In The Betrayer, written with crime writer Peter Walsh, he tells the story himself: how the unit was set up, how a cover identity is built and kept alive, and what that double life cost him.
Narrating The Betrayer
The Betrayer landed in my inbox in the summer of 2022, and it turned out to be a three-person job. There’s the straightforward narrator telling the story. There’s Guy, speaking in the first person about what he actually lived through. And there’s the man he was pretending to be. Getting the feel of Guy mattered most: his terminology, his rhythm, and the way he talks about his alter ego.
There was a lot of homework too. Customs work is full of acronyms and specialist terms, and the story moves around the world, so there were dozens of foreign place names and people’s names to check. With a true story, accuracy is everything.
Above all, I wanted the scenes to have a real sense of place, so the listener feels they’re there, living the tension as it happens.
What stayed with me most was how these men and women put themselves on the line, with very little in the way of resources or thanks. That kind of dedication is beyond anything I can imagine. As the narrator, I’m simply the conduit for Guy’s story.
The part I’m proudest of came afterwards. Guy Stanton listened to the finished audiobook and got in touch:
Just finished listening to the book. I thought it was excellent, Karl’s narration was so good I could see the faces of many of those ghosts in my mind’s eye! Could you pass on my thanks and congratulations to Karl for doing such a fantastic job.
When the man who lived the story says that, you know you’ve done your job.
Should I watch Legends or listen to The Betrayer first?
Either way works, but they give you different things. The series gives you the atmosphere and the characters. The book gives you the detail the drama had to leave out: the training, the paperwork, the near misses, and the long stretches of simply waiting for a deal to happen. If the show left you wanting more, the audiobook runs to just over ten hours.
Hear Guy Stanton in his own words
If you’d like to hear the man himself, Guy is the guest on an episode of the Narco Warriors podcast, hosted by Lindsay Charlton: The Myth, The Man, The Legend (25 May 2026). It’s well worth a listen alongside the book.
The Betrayer
The true undercover story behind the Netflix drama Legends.
Authors: Guy Stanton and Peter Walsh
Narrator: Karl Jenkinson
Publisher: Milo Books, 2022
Length: 10 hrs 12 mins, unabridged
Audible rating:
About Karl
Karl Jenkinson is an award-winning British audiobook narrator and voiceover actor.
Book Karl for narrationIf you enjoyed The Betrayer
Three more true stories from the same world, all narrated by me:
How to Rob a Train
The mystery man of the Great Train Robbery tells his side after fifty years of silence.
View audiobook
Fast Eddie
A Securicor guard drives off with £1.2 million and stays on the run for twenty years.
View audiobook
Empire of Dirt
From raves to riches: a story of identity, crime, $100 million of cocaine, corruption and, finally, redemption. If The Betrayer showed you the drugs trade from the inside as an undercover officer, this is the view from the other side.
Listen on Audible