August 20, 1966. Two men are found dead on Vintem Hill near Niterói, Brazil — wearing suits, raincoats, and handmade LEAD MASKS over their eyes. No wounds. Nothing stolen. And a notebook with chilling instructions: "Cover your face with the agreed mask. Wait for the signal."
Who were Manoel Pereira da Cruz and Miguel José Viana? What was the signal they were waiting for? And why had the same thing happened before, in 1962?
Join Dark Files as we investigate UFO theories, ritual murder, secret experiments, and the skeptics' explanation in one of Brazil's greatest unsolved mysteries.
#LeadMasksCase #UnsolvedMystery #TrueCrime #Brazil #UFO #DarkFiles
