fern. Season 4 Episode release dates & where to watch

1. How Cocaine Is Destroying Europe

2. Why Otto Warmbier Didn't Survive North Korea

This is the real story of Otto Warmbier and why the version most people remember may not be true.

3. The $1 Billion Coca-Cola Machine

This soda fountain isn’t just serving you a drink. It’s quietly collecting your data — and Coke will profit from it tremendously.

4. Did McKinsey Ruin Disneyland?

How did the "Happiest Place on Earth" become a dangerous nightmare?

5. How the Secret Service Actually Works

Who are the people protecting the President? How do they prepare for the unthinkable, and what happens when everything is on the line?

6. The Assassination That Humiliated Hitler

This is the story of how Reinhard Heydrich, the most dangerous Nazi, Hitler’s “man with the iron heart”, was assassinated.

7. The Most Mysterious Drug in the World

This is dimethyltryptamine, known as DMT – arguably the world's strongest psychedelic drug.

8. How Iran’s Leader Was Killed

This is how the Israeli and U.S. attacks on Iran unfolded - how the country’s leader was killed, and what has happened since then. By the time this video is published, new details may have emerged.

9. The Strange Attack on Flight 103

This is the story of the Lockerbie bombing, one of the deadliest and most mysterious plane crashes in history.

10. Why everyone hates Lego now

LEGO went from being a family favourite to a multi-billion dollar empire – why do so many people suddenly hate it?

11. The Bank Heist of the Century

A helicopter, a bomb and millions in cash. This is the story of the Västberga heist - one of the most spectacular robberies of all time.

12. The Most Dangerous Job in Crime

This is the insane, brutal world of Europe's coke runners.

13. How Cops Robbed the Dark Web King

A hunt for Dread Pirate Roberts, thousands of stolen Bitcoin and a scapegoat that almost took the fall. This is the story of the cops who robbed Silkroad.

14. Who Will Rule North Korea Next?

This is the story of Kim Ju Ae, the girl who may rule North Korea one day.

15. The Tragic Story of the Air India Survivor

What really helps you survive the extremely unlikely event of a plane crash.

16. Facebook's Most Dangerous Product

This is the story of Onavo.

17. The World's Deadliest Company

This is the story of the world’s deadliest company: CNTC-STMA. A look into a core part of Chinese state economics and at the devastating effects of a state-sponsored public health crisis.

18. The CIA's Most Valuable Spy

This is Operation Rubicon. One of the biggest intelligence coups of the 20th century.

19. The Hunt for America's Weirdest Killer

This is the story of the infamous Zodiac killer. A mysterious serial murderer who made himself larger than life – and was never caught.

20. The Insane Story of Serbia‘s Human Slaughterhouse

This is the story of one of Europe’s most notorious crime networks and their human slaughterhouse; their alleged ties to Serbia's elites; and an ingenious takedown by relentless investigators.

21. We Investigated a New Designer Drug

These are Nitazenes, a highly potent but largely unknown class of synthetic opioids that are quietly entering the European drug supply.

22. The Man Who Went Undercover in Auschwitz

This is the story of Witold Pilecki, the man who infiltrated Auschwitz.

23. How Israel Kills Journalists

The war in the Gaza Strip is considered the deadliest for journalists in the 21st century. Many are killed in strikes on residential buildings, civilian infrastructure, or directly while on assignment. However, there are also allegations that the Israeli military has deliberately targeted some of them. The IDF denies this. This is the story of journalism in Gaza - and the conditions under which it takes place.

24. Why Putin Is So Hard to Kill

Vladimir Putin has a lot of enemies. So how does he protect himself? In this video, we’ll look at four of the Kremlin’s security measures. They tell a story, one about the Russian state and its increasingly paranoid leader.

25. The Kid Who Hacked America

This is the story of Kevin Mitnick. Vilified by the media. Hunted by the authorities. Feared as one of the world's most dangerous hackers.

26. How a $10,000,000 Poker Game Was (Allegedly) Rigged

This is the story of an enormous alleged poker scandal.

27. Why Is There (Almost) No McDonald‘s in Africa?

McDonald’s conquered the world - but not Africa. Why are the golden M’s so rare across the continent?

28. The Truth About fern

This is how fern became fern, how we make our videos and what's next.

29. Hansa: The Infiltration of the Dark Web

This is the story of one of the boldest international police investigations of all time, likely the largest trap in Darknet history. This is Operation Bayonet.

30. Exposing a $1,900,000,000 Pharma Company

This is the story of a German pharmaceutical company, a billion-dollar opioid business, and a crisis spanning multiple continents. Is a new opioid crisis looming — one made in Germany?

31. How China's Biggest Scammer Got Caught

This is the rise and fall of crypto queen Zhimin Qian. After taking money from more than 120,000 people, she flees China and lives in luxury across Europe - until one small mistake brings everything crashing down.

32. The Unsolved Murder in Room 1046

This is the story of Room1046, one of America’s strangest unsolved murders.

33. The $1 Billion McDonald‘s Box

This is the story of McDonald’s iconic Styrofoam burger box and how it became one of the most controversial pieces of fast-food packaging ever made.

34. The Death of Educational Content on YouTube

Countless AI slop channels are relentlessly copying our work. So one day we decided: enough is enough. We went undercover to investigate who’s behind them and what this flood of AI slop means for the future of educational content on YouTube.

35. The FBI Agent Who Infiltrated the Mafia

This is the story about Donnie Brasco, the undercover agent who infiltrated the New York Mafia.

36. How the World’s Most Dangerous Drug Lord Was Caught

El Mencho may be the most powerful and ruthless drug lord in the world. His cartel has taken on the Mexican state and built a global criminal empire. How did he become so powerful? Why has no one been able to stop him? And what happens if he is finally caught?

37. The Most Disgusting Influencer Campaign of 2026

This is the story of how journalists uncovered a secretive social media campaign designed to lure young Americans to the Polymarket prediction market platform.

38. China's Secret Plan for London

This is the story of a controversial construction project in the heart of London. Behind it are growing fears over espionage, repression and the safety of thousands of people.

39. the entire history of 4chan, i guess

This is a story about the rise and fall of 4chan, an anonymous image board created by a teenager, and how it became a breeding ground for online culture, memes, and extremism.