For almost two decades, thousands of anonymous, threatening letters plagued the small town of Circleville, Ohio. From unsolved murders to illicit affairs, the many mysteries behind the terror campaign still confuse anyone who dares tug at their loose threads.


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The Circleville Letters

Life can take unexpected turns. Some are easily defined. Others… require further investigation. Every Tuesday, collect the pieces of a seemingly unsolvable puzzle — events in history which have eluded so many for so long, but deserve a deeper look. Unexplained Mysteries is a Spotify Original.

Society & Culture

Personal Journals

History

Philosophy

Places & Travel

True crime

What happens when a teenager goes missing in the world’s smallest, and supposedly safest, country? Emanuela Orlandi’s sudden disappearance remains the only missing person’s case in Vatican City, yet more than 40 years later we still have no idea what really happened behind the papal state’s walls. 
After the story, stick around for an exclusive interview with the director of The First Omen, Arkasha Stevenson!
This episode is brought to you by Twentieth Century Studios' the First Omen. Experience the most terrifying movie of the year, and what critics are calling “deliciously disturbing” only in theaters April 5th.
Conspiracy Theories is now on Instagram @theconspiracypod and TikTok @conspiracy.pod! Follow us to keep up with the show and get behind-the-scenes updates from Carter and the team.
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Disappearance at the Vatican: The Orlandi Case

When it comes to sudden memory loss, the most common forms of amnesia are often short-term, and stem from trauma to the brain. But some cases are much more inexplicable. People with Dissociative Amnesia don't experience brain damage, but still lose large chunks of time… and can even forget their entire identity. This episode originally aired in February 2021.
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Amnesia

How would a time machine work? Physicists have been engaging the question for decades — and building theoretical frameworks to make it happen. From designs like the Tipler Cylinder, to the paradoxes that imply time travel's improbability, how close are we really to folding the fabric of space-time back on itself… and breaking free from the constraints of time as we know it? This episode originally aired in November 2022.
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Time Travel Pt. 2

Is it possible… and has it happened already? Today we’re investigating the most famous — maybe even most credible — timeslip in history (involving two respected academics and Marie Antoinette!), and the alleged time traveler from 2036 who’s connected to a mystery no one’s been able to crack. This episode originally aired in November 2022.
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Time Travel Pt. 1

A disembodied arm, a man-eating shark, and multiple rumored mob hits. It’s one of Australia’s most famous and bizarre murder mysteries, but the pair of unsolved deaths might not be murders at all...
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The Circleville Letters

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