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. The thrillers De Al-Qaeda Connectie 1 and 2 have been translated into one book, entitled The Hunt for a Mastermind. The Oslo Virus has been translated into A Doomsday Agent and The Al-Qaeda-aanval in Day of Reckoning. More translations of his thrillers will follow.