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In 1966, two men were found dead on a hillside in Niterói, Brazil — dressed in suits, lying side by side, and wearing strange lead eye masks.

There were no signs of violence.
No clear cause of death.
And in their pockets, investigators found a note containing cryptic instructions:
“16:30 be at the specified place… 18:30 ingest capsules… after effect, protect metals… wait for signal.”

In this episode of The Eclectic, we explore the Lead Masks Case — the timeline, the evidence, and the theories that have emerged over decades. From scientific experimentation and spiritualism to conspiracy and the unexplained, this case remains one of the strangest unsolved mysteries of the twentieth century.

Because sometimes, the clues only deepen the mystery.

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Sources used:

Lead masks case - Wikipedia

Two Men Were Found Dead Wearing Lead Masks And Suits, And They Had A Cryptic Note With Them - Chip Chick

The Lead Masks Case: Brazil’s Most Chilling Mystery — Michele Gargiulo

The Lead Masks Case: Mysterious 1966 UFO Deaths on Brazil’s Vintém Hill

Lead Masks Case: sources (part 3) – pmig96

The Lead Masks Case | Criminal

Unresolved: The Lead Masks Case on Vintém Hill - The Ghost In My Machine

The Lead Masks Case; the name given to the events which led to the death of two Brazilian electronic technicians: Manoel Pereira da Cruz and Miguel José Viana. Their bodies were discovered on August 20, 1966 and wearing these masks. What killed them is still unknown : r/UnexplainedPhotos

The Lead Masks Case - Historic Mysteries

The Lead Masks of Vintem Hill, an unsolved mystery from brazil : r/UnresolvedMysteries