Maartje Weerdesteijn is an assistant professor at the Department of Criminology, Vrije Universiteit Amsterdam. She previously authored The Rationality of Dictators (Intersentia, 2017) and co-edited Perpetrators of International Crimes (OUP, 2019) and The Oxford Handbook on Atrocity Crimes (OUP, 2022).Alette Smeulers is a full professor of international crimes at the University of Groningen and recently published Perpetrators of Mass Atrocities – Terribly and Terrifyingly Normal? (Routledge 2024). She has a podcast series together with Nicola Quaedvlieg called Terribly and Terrifyingly Normal?.