The video discusses 10 of the most chilling unsolved mysteries in history. These include:
1. The Dyatlov Pass incident, where 9 hikers mysteriously died in the Ural Mountains.
2. The Flannan Isles lighthouse mystery, where 3 lighthouse keepers vanished without a trace.
3. The Sodder children disappearance, where 5 children went missing during a house fire.
4. The Devil's Footprints, where strange footprints appeared in the snow in Devon and Dorset, England.
5. The Navy Blimp L-8, where 2 airmen disappeared during a mission off the California coast.
6. The Who Put Bella in the Witch Elm mystery, where a woman's body was found in a tree in Worcestershire, England.
7. The Beaches of Severed Feet, where multiple severed feet have washed up on beaches in British Columbia and Washington State.
8. The Phantom Barber, a serial attacker who cut the hair of women and young girls in Pascagoula, Mississippi.
9. The Lead Masks Case, where 2 Brazilian men were found dead wearing lead masks.
10. The Green Children, where 2 children with green skin appeared in Suffolk County, England, and one of them later explained they were from an underground place called the Land of St. Martin.
Here are the key facts extracted from the text:
1. In the 12th century, two green-skinned children were found in Woolpit, Suffolk County, England.
2. The children were taken in by Sir Richard de Calne and appeared to be starving, but they would only eat beans initially.
3. The boy died from illness, but the sister eventually lost her green color and learned to speak English.
4. The sister explained that they were from the "Land of St. Martin," an underground place with no sun where everyone is green.
5. On August 20th, 1966, two Brazilian electronic technicians, Miguel Jose Viana and Manuel Pietro de Cruz, were found dead on Ventham Hill in Rio de Janeiro, Brazil.
6. The men were wearing formal suits, lead masks, and had an empty bottle of water and two wet towels beside them.
7. A notebook was found with mysterious instructions directing the men to be at the location at 4:30 p.m. to ingest capsules.
8. In 1942, a barber in Pascagoula, Mississippi, was preying on women and young girls, breaking into homes and giving them unwanted haircuts.
9. The barber entered ten houses before the arrest of William Dolan, a German chemist.
10. Between 2007 and present, 16 severed human feet have washed ashore on various beaches in British Columbia and Washington State.
11. The severed feet were mostly right feet, and two were left feet that matched up with the right feet that were recovered.
12. On April 18th, 1943, four young boys found the body of a woman wedged inside a hollowed-out witch elm tree in Hagley Wood, Worcestershire, England.
13. The woman's hand was missing, but it was later found in her mouth.
14. In 1944, graffiti began appearing in the area asking "Who put Bella in the which Elm?"
15. The victim, murderer, and original graffiti artist have yet to be identified.
16. On August 16th, 1942, Navy blimp L-8 took off from Treasure Island in San Francisco Bay with two occupants, Lieutenant Ernest Cody and Ensign Charles Adams.
17. Around 7:42 a.m., Cody radioed in that they'd spotted a suspicious oil slick, but that was the last transmission from the crew.
18. The deflated blimp came down on a street in Daly City, but there was no sign of the men or any evidence of them being attacked or suffering any failure.
19. On November 9th, 1855, residents of Devon and Dorset in England awoke to discover fresh snow and mysterious hoof-like footprints that seemed to wind through the towns.
20. The footprints were estimated to be 10 centimeters long by 7.5 centimeters wide, with strides measuring between 20 and 41 centimeters apart.
21. On Christmas Day in 1945, Jennie Soder's house was suddenly set on fire, and five of her children were missing.
22. Despite a search, no trace of the missing children was found, and the cause of the fire remains unknown.
23. On December 26th, 1900, the Flannan Isles lighthouse was the site of a mysterious disappearance of three men: Thomas Marshall, Donald McArthur, and James Ducat.
24. The men vanished without a trace, leaving behind an unlocked door, an untouched meal, and stopped clocks.
25. On January 27th, 1959, ten ski hikers from the Ural Polytechnical Institute set out on an expedition to Mount Otorten in the Ural mountain range.
26. One of the hikers, Yuri Yudin, turned back on the second day due to illness, but the other nine failed to reach their destination.
27. On February 26th, a search party found the group's tent torn apart from the inside, and eight of the nine sets of tracks were found leading away from the campsite.
28. Six of the hikers' bodies were found having frozen to death, while three others had sustained trauma, including one female hiker who was missing her eyes and tongue.