Mysterium Archive logo

Mysterium Archive

History's unsolved files

Subscribe on YouTubeOpen the archive

Latest file

The Book No One Has Ever Been Able to Read

The archive

Every case we have opened, and the ones still sealed.

CASE FILE Nº 002 · c. 1420

The Book No One Has Ever Been Able to Read
CASE FILE Nº 001 · 1872

The Ship Found Sailing With No One On Board

CLASSIFIEDopens 10 Oct 2026
CASE FILE Nº 003 · 1959

9 Hikers Fled Their Tent Into the Freezing Night. Why?

CLASSIFIEDopens 12 Oct 2026
CASE FILE Nº 004 · 1971

The Man Who Jumped From a Plane With $200,000 and Vanished

CLASSIFIEDopens 13 Oct 2026
CASE FILE Nº 005 · 1911

How the Mona Lisa Was Stolen, and Why It Made Her Famous

CLASSIFIEDopens 14 Oct 2026
CASE FILE Nº 006 · 1888

Jack the Ripper: The 5 Suspects, and the One the Evidence Points To

CLASSIFIEDopens 15 Oct 2026
CASE FILE Nº 011 · 1959

The Dyatlov Pass Hiker Who Had a Code Tattooed on His Arm

CLASSIFIEDopens 16 Oct 2026
CASE FILE Nº 008 · 1948

The Man on the Beach With a Secret Code in His Pocket

CLASSIFIEDopens 17 Oct 2026
CASE FILE Nº 012 · 1948

We Ran the Somerton Man's Code Through a Computer. This Is What Came Out

CLASSIFIEDopens 19 Oct 2026
CASE FILE Nº 007 · 1590

The Colony That Disappeared, Leaving One Word Carved on a Tree

Short files

One clue at a time.

Part 2/3: the emperor who paid a fortune for an unreadable book 👑 600 years old, and no one can read it 📜 Part 3/3: the legend, the lie, and the most likely answer ⚓ Part 2/3: what the boarding party found on the ghost ship 🔍 A ship found sailing with no one on board 🚢

How we work

Not just the famous story. The evidence behind it.

Primary sourcesOld newspapers, court records, logbooks and letters that most retellings ignore.
Our own testsIn Mysterium Lab we run the numbers ourselves, and show where we could be wrong.
Theory vs evidenceEvery theory gets a fair hearing, and every claim is fact-checked before it airs.

Every weekday, a new file