In March this year, 25-year-old Noelia Castillo died by lethal injection. Her father had fought in the courts for nearly 2 years to stop her euthanasia, but failed in the attempt. And the debate about who has the right to challenge an adult’s decision to have euthanasia hasn’t gone away. In May, the Supreme Court ruled that those with, ‘a particularly close connection’ to the person wanting to die may have the right to contest an application for euthanasia.

Of the 565 people who died by euthanasia in 2025 in Spain, 73 chose to donate their organs. Noelia Castillo wasn’t an organ donor, but there are claims she was pressured to become one. And now the lawyers who have represented her parents are advocating a ban on organ donation in euthanasia cases.

Why does this matter? Spain’s health service supports one of the world’s most successful organ donation programmes. Last year more than 2,500 Spanish people became organ donors after death. And although the number of those who had euthanasia was tiny, the beneficiaries are very real… People like Carme, who was transplanted with a new face. Esperanza Escribano and Linda Pressly explore some of the fall-out from the death of Noelia Castillo.

The BBC investigates Zhang Zhidong, also known as “Brother Wang”, a Chinese national described by US law enforcement as one of the most significant drug traffickers in the world.

He is now awaiting trial in the US and has pleaded not guilty. He is accused of building a criminal empire connecting China's chemical factories to the Mexican cartels flooding the US with fentanyl.

The BBC investigates his rise and fall, speaking to his former friend, and to cartel members who knew him as “number one” and the "king of fentanyl”.

Jordanian director Zain Duraie talks about her debut film Sink, an intense family drama about a mother coping with her son's mental health issues. Zain reveals the severe difficulties she faced to get the film financed, why she sought out the advice of other directors and how the film Titanic changed her life. And she offers her own tips for would-be film-makers. This episode of The Documentary, comes to you from In the Studio, exploring the processes of the world’s most creative people. If you’ve been affected by issues raised in this programme, you may want to speak to a health professional or an organisation that offers support.

The Atemoya Custard Apple is a much sought-after fruit grown only in one county in Taiwan. The Taiwanese are justly proud of it. Meanwhile, the Musang King Durian - grown in Malaysia - is also highly prized for its unique flavour as the ‘Hermes of Durians.’ Every year, fruit lovers across the region look out for these treats and snap them up where they can, often paying high prices. In recent years, farmers have seen opportunities to raise their income by selling these niche, super-luxury fruits on the Chinese market, but the strategy comes with big risks too. Koh Ewe from the BBC’s Singapore Bureau has been tracking the fortunes of these two fruits.

A statue of Saint Olga is a much-loved figure in Central Kyiv, Ukraine. So much so, that when Russia invaded Ukraine, the statue was given a flak jacket with the words “she needs armour” written on it. Saint Olga of Kyiv is celebrated by Ukrainians and Russians alike. She’s a saint in both the Catholic and Orthodox churches and her saint’s day is celebrated on 11th July. BBC Ukrainian’s Irena Taranyuk explores her sometimes violent history.

The Fifth Floor is at the heart of global storytelling on the BBC World Service, bringing you the best stories from journalists in the BBC's 43 language services. We're here to help you make sense of the stories making headlines around the world; to excite your curiosity and to get to grips with the facts.

Recent episodes have investigated Russia’s youth armies and how they make soldiers of Ukrainian children; featured the BBC team who were the first journalists to the site of the Nigerian school kidnappings and reflected the effects of internet blackouts in Iran, Uganda and India.

If you want to know more about Venezuela’s acting president, Delcy Rodriguez, and the legacy of Hugo Chavez; or how Vladimir Putin’s network of deep cover spies operates; or why Donald Trump signed an executive order granting white South Africans asylum in the US, we have all those stories and more.

This episode of The Documentary comes to you from The Fifth Floor, the show at the heart of global storytelling, with BBC journalists from all around the world. Presented by Faranak Amidi.

Produced by Laura Thomas, Caroline Ferguson and Hannah Dean.

(Photo: Faranak Amidi. Credit: Tricia Yourkevich)