Two men found dead on a lonely Brazilian hillside — wearing lead masks and clutching a cryptic note about radiation and a mysterious “signal.”<br />What really happened to them? Was it science, faith, or something beyond our world?<br /><br />In this haunting documentary from Biography Plus, we uncover one of the strangest unsolved mysteries of the 20th century — The Lead Masks Case.<br />From Cold War paranoia to UFO contact experiments, this story has it all: mystery, science, and the limits of human curiosity.<br /><br />🎧 Narrated in cinematic style for a global audience.<br />đź“Ť Location: Rio de Janeiro, Brazil<br />🎥 Watch till the end for the shocking final theory.<br /><br />#BiographyPlus #MysteryDocumentary #UnsolvedHistory #LeadMasksCase
