Mario Escobar Golderos has a degree in History, with an advanced studies diploma in Modern History. He has written numerous books and articles about the Inquisition, the Protestant Reformation, and religious sects. He is the executive director of an NGO and directs the magazine Nueva historia para el debate, in addition to being a contributing columnist in various publications.

Passionate about history and its mysteries, Escobar has delved into the depths of church history, the different sectarian groups that have struggled therein, and the discovery and colonization of the Americas. He specializes in the lives of unorthodox Spaniards and Americans.