In 1938, at the age of 31 years and with a remarkable future scientific career ahead of him, physicist Ettore Majorana, a disciple of Physics Nobel Prize winner Enrico Fermi – who considered Majorana a genius –, disappeared at a time when Italy was going through turbulent political confrontation. To this day, no one really knows what happened. Since then, the mystery of Majorana's disappearance has never ceased to intrigue, causing rivers of ink to flow and generating strange hypotheses and theories. Among others, the acclaimed author Leonardo Sciascia dedicated a book to him: La Scomparsa di Majorana [The Disappearance of Marjorana]. It is this enigmatic case that mathematician Umberto Bartocci, formerly a professor at the University of Perugia, revisits in his essay for Electra, not shying away from advancing his theories on this dramatic, radical disappearance.