Unlike his more narrative-driven works, Materia Reservada adopts an almost forensic tone, presenting scanned documents, handwritten notes, and official-looking correspondences. This aesthetic fuels the belief among fans that the book contains genuine leaked intelligence.
Materia Reservada, first published in 1992, is a comprehensive collection of Benitez's investigations into paranormal events, UFO sightings, and unexplained phenomena. The book is a result of his extensive research, which spanned over two decades. Benitez traveled extensively, gathering information and interviewing witnesses to support his claims. materia reservada jj benitez pdf download work