When messaging service EncroChat was shut down in 2020, hundreds of arrests were made across Europe and a truly grim discovery was made in the Dutch countryside.

Based on EncroChat messaging, the Dutch police discovered a shipping container used as a torture chamber, complete with a dental chair, instruments and soundproofing. Journalist Paul Vugts and criminologist Damián Zaitch explain who is behind the torture chamber, and whether this means that the Netherlands is on its way to becoming a narco-state.

In Investigators, we hear the stories behind some of the world's most intriguing investigations, told through the eyes of those who conducted them.