Zembla Season 24 Episode 11 De bittere pil ( Air Date 2018-04-17 ) Genre Documentary category. Overview "Zembla is a Dutch television documentary programme by VARA and NPS. The documentaries are based on in-depth research which can take months. The subjects are often controversial. A documentary in 2001 about fraud in the Dutch construction sector led to parliamentary inquiries. In May 2006 the programme exposed the fact that politician Ayaan Hirsi Ali had lied in her claim for asylum, which led to her resignation from parliament.".