1-The Zodiac Killer

Operating in Northern California throughout the late '60s and into the '70s, the Zodiac Killer was an anonymous serial killer who is believed to have killed at least five people. However, there are some people who believe that Zodiac has a bodycount of up to 37 people. This unsolved case only becomes stranger when you factor in the taunting messages in the form of ciphers delivered to the press. The ciphers feature numbers, letters, and symbols that have only recently been cracked.

2-The Mothman and the collapse of the Silver Bridge

A classic harbinger of doom, the Mothman was a cryptic that haunted the residents of Point Pleasant, West Virginia throughout the late '60s. This creature was believed to be a humanoid with burning red eyes and giant moth wings that tended to show up when something awful was about to happen.

In December 1967, the Silver Bridge in Mason County, West Virginia collapsed, killing 46 people. Many people believe that this super destructive moment was caused by the Mothman as the cryptid stopped appearing following the collapse. There are numerous theories about the Mothman, naming the creature as everything from a demon, to an alien, to precognitive vision.

3-The Beaumont Children Disappearance

On January 26, 1966, Jane, Arnna and Grant Beaumont (aged 9, 7, and 5) hopped on a bus to visit Glenleg Beach in South Australia. The last time anyone saw the children they were playing near the beach, but by the time their parents made it to the area to search for them they were long gone.

The police quickly put together a search of the area, and within a day the entire country was keeping their eyes out for these children. Reports placed the children with a tall man with light brown hair, but that tip never came to anything. Two years after the disappearance a series of letters arrived at the Beaumont family's home from Dandenong, Victoria. In 1992, forensic evidence revealed that the letters were fake. To this day the children have never been found.