Antônio Vilas-Boas - October 15, 1957
Long before alien abductions became a global obsession, one chilling case emerged from the rural farmlands of Brazil — a case that many researchers still consider one of the most disturbing and influential encounters ever reported.
Antônio Vilas-Boas (1934–1991) was a Brazilian farmer — and later a lawyer — who claimed he was abducted by extraterrestrials in 1957. Although stories involving mysterious beings and UFO encounters had circulated before, the Vilas-Boas case became one of the very first alien abduction accounts to gain widespread international attention. To this day, skeptics argue the story was a hoax, yet Vilas-Boas reportedly maintained his account for the rest of his life.
Born in São Francisco de Sales, Vilas-Boas was the son of Jerônimo Pedro Vilas-Boas and Enésia Cândida de Oliveira.
The details of his alleged encounter only became known after Dr. Olavo Teixeira conducted an extensive medical examination and interview with him in 1958.
At the time of the incident, Antônio was a 23-year-old farmer working late at night to avoid Brazil’s brutal daytime heat. On October 15, 1957, while ploughing fields near São Francisco de Sales, he noticed what appeared to be a strange “red star” glowing in the night sky.
Location of the incident in the State of Minas Gerais
But this was no ordinary light. According to Vilas-Boas, the object rapidly descended toward him, growing larger until it transformed into a massive egg-shaped craft with a glowing red light at the front and a spinning cupola on top. As it approached the ground, three metallic landing legs extended from beneath the craft.
Terrified, Vilas-Boas tried to flee.
He first attempted to escape using his tractor, but claimed that both the engine and headlights suddenly failed after traveling only a short distance. Forced to continue on foot, he was allegedly overtaken by a humanoid being roughly five feet tall, wearing gray coveralls and a helmet. The creature’s eyes were described as small and blue, and instead of speaking, it communicated through barking or yelping sounds. Moments later, three more beings appeared and helped drag him aboard the craft.
Inside, the experience became even stranger.
Vilas-Boas claimed the beings stripped him naked and coated his entire body in a mysterious gel-like substance. He was then escorted into a large semicircular chamber through a doorway marked with bizarre red symbols that he later reproduced for investigators from memory. In this room, the entities allegedly took blood samples directly from his chin.
Afterward, he was taken to another room and left alone for approximately half an hour. During that time, an unknown gas filled the chamber, causing him to become violently sick.
Then came the most infamous part of the encounter.
According to Vilas-Boas, a female humanoid entered the room. Unlike the others, she appeared strikingly attractive and completely nude. She was the same height as the beings he had already encountered, with large blue cat-like eyes, a pointed chin, and long white-blonde hair. Yet her underarm and pubic hair were described as bright red. Vilas-Boas said he felt intensely drawn to her, and the two engaged in sexual intercourse. During the encounter, he noticed she never kissed him, but instead bit or nipped at his chin.
When it ended, the woman reportedly smiled, rubbed her stomach, and pointed upward toward the sky. Vilas-Boas interpreted this as a sign she intended to raise their child somewhere in space. He later recalled feeling deeply disturbed and humiliated by the experience, saying he believed the beings viewed him as little more than “a good stallion.”
Afterward, the beings returned his clothing and escorted him through the craft. During the tour, Vilas-Boas attempted to steal a clock-like instrument as proof of what had happened, but the entities caught him before he could escape with it. He was eventually led back outside and watched as the glowing craft lifted into the night sky and vanished. When he returned home, he discovered that four hours had passed.
Despite the bizarre nature of the story, Vilas-Boas would go on to live a relatively normal life. He became a lawyer, married, and had four children — but he never recanted his experience. He died on January 17, 1991.
Following the alleged encounter, Vilas-Boas reportedly suffered from nausea, weakness, headaches, and painful skin lesions that appeared without bruising. Eventually, he responded to a newspaper ad placed by journalist José Martins seeking people who had experienced UFO encounters. Martins then connected him with Dr.
Olavo Fontes of Brazil’s National School of Medicine, who also worked with the American UFO research organization APRO. After examining Vilas-Boas, Fontes concluded that he appeared to have been exposed to a significant amount of radiation and may have been suffering from mild radiation sickness.
Antônio Vilas-Boas drew symbols he saw over the doorway shortly after his alleged 1957 encounter.
Writer Terry Melanson later described the symptoms in chilling detail, including body pain, nausea, burning sensations in the eyes, and strange reddish skin nodules that leaked yellowish fluid and remained for months.
Researchers note that the Vilas-Boas case predates the famous Betty and Barney Hill abduction by several years — making it one of the earliest detailed alien abduction narratives ever recorded. Unlike many later cases, Vilas-Boas claimed he remembered every detail without hypnosis.
Still, controversy has followed the case for decades.
Researcher Peter Rogerson argued that a remarkably similar story had already appeared in the Brazilian publication O Cruzeiro months before Vilas-Boas shared his claims publicly, suggesting he may have borrowed ideas from earlier UFO stories and contactee accounts connected to George Adamski. Rogerson also challenged the common assumption that Vilas-Boas was an uneducated rural peasant incapable of inventing such a detailed story. In reality, the Vilas-Boas family owned a tractor and Antônio himself was highly ambitious, eventually studying law and becoming an attorney. Ironically, some ufologists who once claimed he was “too simple” to fabricate the story later argued he was “too respectable” to have done so.