fern. - Season 4

TMDB has not published a written overview for this episode yet.

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

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

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

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

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

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

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.

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

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

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.

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

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.

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

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

This is the story of Onavo.

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.

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

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

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.

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

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

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.

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.

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.

This is the story of an enormous alleged poker scandal.

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

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

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.

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?

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.

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

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.

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.

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

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?

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

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.

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.