Rolf Österberg (pseudonym) is an ex-commando who served as such for a number of years. His interest in the work of the UN saw him working for them in Africa for a few years. He is currently full-time writer, living outside the Netherlands.

One Woman Crusade was first published in Dutch as De Zaak by Celtica Publishing in 2016. It is the prologue to a series of thrillers that can be read on their own, but have a common dominator in both global terrorism and a number of characters. There are three thrillers yet waiting to be translated from Dutch to English: Het  Oslo Virus,  De Al-Qaeda Aanval en Bloedbroeders, all previously published in Dutch.