From the time they were children growing up in Wales during the 1970s, identical twins June and Jennifer Gibbons refused to speak to anyone or even make eye contact. It earned them the nickname "The Silent Twins." And the only way they'd truly break their silence...was for one of them to die. 

In December of 1900, the three lighthouse keepers stationed at a lighthouse on the uninhabited Scottish island of Eilean Mor disappeared without a trace. The folklore surrounding the island has led some to believe that they were killed by an ancient, supernatural force.

In 1928, an Iowan woman claiming to hear disturbing voices underwent an exorcism—it lasted 23 days. It turns out that Anna Ecklund wasn't just possessed by one demon, but by several. Almost 100 years later, it remains one of the most famous exorcisms in history.

A series of allegedly leaked documents suggest that, in the aftermath of the infamous 1947 Roswell crash, the U.S. government put together a top-secret task force called “Majestic 12” to conceal the truth about UFOs.

On a hiking trip in Russia's Ural Mountains in 1959, nine young mountaineers tore their way out of their tent in the middle of the night and went running into the wilderness, half-clothed and without shoes. By morning, they were all dead—some from hypothermia, others from unexplained catastrophic injuries. To this day, no one knows what happened.

In 1938, one of the most prominent physicists in the world boarded a ship from Palermo to Naples—and never got off. His sudden disappearance sparked rumors about kidnapping, government cover-ups, and secret weapons technology.

In 1948, an unknown man was found dead of mysterious causes on an Australian beach. 72 years later, investigators are still unable to say who he was or why he died, despite an abundance of intriguing theories.

In the 1980s, twin brothers Jim and Jack Weiner started having the same recurring nightmares. Under hypnosis, they uncovered the root of the dreams: repressed memories from a bizarre experience earlier in their lives.

In 1966, two electronics technicians were found dead on a hill near Rio de Janeiro, with a cryptic note and two masks made out of solid lead. The investigation raised more questions than answers, uncovering among other things, involvement in an occult society.

Every Wednesday, join Crime Junkie’s Ashley Flowers as she teams up with Parcast to search for the truth about history’s unexplained events in this new Parcast original series. Supernatural with Ashley Flowers. From unsolvable crimes to alien abductions, she’ll dive deep into the strange and surreal to explain some of the world’s most bizarre true crime occurrences—where the most fitting theory isn’t always the most conventional. Supernatural with Ashley Flowers premieres Wednesday, March 11th, free on Spotify or wherever you get your podcasts!