David G. Robertson is Senior Lecturer in Religious Studies at the Open University. His work focuses on the social dynamics of knowledge in religions, conspiracy theories and beyond. He is the author of UFOs, the New Age and Conspiracy Theories (2016), Gnosticism and the History of Religions (2021) and Religion and Conspiracy Theories: An Introduction (2024).

Katja Valaskivi's research focuses on the circulation of belief systems, worldviews and ideologies in the hybrid mediasphere. She heads the Helsinki Research Hub on Religion, Media and Social Change (Heremes) at the University of Helsinki, and is the author or co-author of Hybrid media events: The Charlie Hebdo attacks and the global circulation of terrorist violence (2018) and Traces of Fukushima. Global events, networked media and circulating emotions (2019).