 Welcome to Assignment on the BBC World Service. I'm Linda Presley, and this week, the story of an extraordinary Dutch couple. Jan and Els have decided to die at the same time, together. In the Netherlands, euthanasia is legal if someone is suffering unbearably and is able to convince doctors their application is voluntary. But duo-euthanasia, an application by two people, is complex, especially if one of them has a diagnosis of dementia, as Els does. That's Assignment, after the news.