Joop van Wijk-Voskuijl is the third of Bep Voskuijl’s four children. He was born in 1949 in Amsterdam. After a successful career as a video producer (creating corporate movies for major Dutch companies) and marketing manager (for newspapers such as NRC Handelsblad and Algemeen Dagblad), Joop retired in 2010 to pursue research and writing with the goal of telling his mother’s story. He also volunteers as a guest lecturer, teaching Dutch schoolchildren and other groups about Anne Frank, the Holocaust, and the resistance during World War II.

Jeroen De Bruyn was born in 1993 in Antwerp. At age fifteen—the same age as Anne when she died of typhus in the Bergen-Belsen concentration camp—Jeroen began doing original research on the Secret Annex. He got to know the Anne Frank House firsthand during an internship there in 2011. He went on to study journalism, subsequently contributing toprominent Flemish news magazines like Knack and Joods Actueel, and working as a senior editor for the major Belgian newspaper Gazet van Antwerpen.