Welcome to my website!

I am an independent investigative journalist, mentor, lecturer and trainer. My articles, on the impact of powerful corporations on our environment and climate, appear in the leading Dutch magazine De Groene Amsterdammer. And my training courses in investigation methods, data journalism and interview techniques have been followed by thousands of professionals and students on four continents.

I co-developed the internationally renowned Story-Based Inquiry method and co-authored eight books on investigative journalism, including the VVOJs Handbook for Investigative Journalists (2022) and several handbooks published by Unesco and the Centre for Investigative Journalism (CIJ) in London. I also advise media, investigative teams and NGOs on organizing and implementing investigative projects.