Honestly the Cape Intruder isn't disturbing just weird as hell. During the night in Cape, Maine in like 2005 people who kept their doors unlocked would wake up to find a man staring at them and he would quickly flee. No people were ever injured and nothing was ever stolen. He just watched people sleep apparently. -whatislife40

The Axeman of New Orleans. Guy was murdering people but wrote a letter that he wouldn't kill anyone who played jazz in their home/business. Never caught. -BlueFalconPunch

West Mesa Bone Collector. Ok this one is extremely creepy- 12 women and girls identified, with the final victim being only 15. Satellite images show the final body was buried in 2005. The police release photos of women that appear to be sleeping or incapacitated saying they are of interest to the case but don’t explain how. -Temporary-Sundae2471

The Hinterkaifeck murders always freaked me out. I've read quite a bit about it, and it sounds like it was probably a neighbor. But the creepy part is that the killer was probably living/hiding out in the attic for multiple days beforehand. -TecateLanding

The disappearance of the Beaumont Children The Beaumont Children are siblings who disappeared in 1966, in Australia. There are still to this day investigations on going to try and find the remains of these children. There have been foundations of sheds and houses dug up.

The children have never been found and the suspect(s) has never been identified. -jnrdingo

Technically not unsolved since everyone can guess what happened to her but it’s one of the creepiest IMO. Alissa Turney was a teenager who disappeared in 2001. Her stepfather, Michael Turney, was obsessed with her. He stalked her at work, and put cameras in the vents to spy on her. Michael picked her up from school early on May 17, 2001 and she’s never been seen since. -meyganvibes

The disappearance of Brandon Swanson. It's a lengthy case so I won't summarize here, but he went missing while on the phone with his parents, his last known words being "Oh shit" before the line went dead. Not a trace of him has ever been found. -bubble0peach

Alicia Navarro. She went missing, presumably after sneaking out to meet with a man she was talking to on Discord.

It's creepy because of how real it is. As a naive girl who met up with guys I befriended online as a teenager, I just cannot stop thinking about how goddamn lucky I was. -meladey

Murder of Betsy Aardsma. In 1969, Betsy, a student was killed in the stacks of the library at my old college (Penn State) and was found with a singular stab wound on her chest. It wasn’t even late or anything, and while there were many suspects, no one was ever arrested for it. It’s insane how someone could kill a person in broad daylight at a major university, and get away with it. -Rickdaquickk

Brian Shaffer, who went missing from Columbus, Ohio. He was reported missing after a night out. There's security camera footage of him entering a bar, but absolutely no footage of him leaving. Like he went into the bar and just flat out dropped off the face of the earth. The last I knew, he's never been found and nobody knows what happened to him.

The bar was on a second floor at that time with only one public entrance/exit. The police extensively reviewed all the security camera footage. Brian and everyone else who was there that night was seen on camera entering the bar. Everyone, except for Brian, who was at the bar that night was seen on camera leaving the bar. Which would nix any theories that he left wearing different clothes/disguised as someone else/mixed in with a crowd. -RedRose_812

Asha Degree. There’s so many weird things about the case to me. She went missing on her parent’s anniversary, she ran into the woods when approached, and likely left home in her pajamas. It feels like she left on her own, I just can’t begin to imagine why. -chesterlola2014

Flight 370 Malaysia Airlines. Disappeared without a trace. -ignaciodib

Missy Bevers. A suspect in full SWAT armor breaks into a church and smashes windows and breaks opens doors with a hammer, looking for a local fitness instructor. They then find and beat her to death before getting away.

There is high quality surveillance video of both them and their car, but investigators couldn't make out the license plate. There has been a suspect who was cleared because of an alibi, and there's been no recent updates. -wedoabitoftrolling

Kyron Horman. I feel like somebody knows something that will blow the case wide open but to this day nobody knows where he went or what happened to him. There are some solid theories out there but it’ll always be a mystery until we get an official answer. -candycrunch1

In the early 80s, all within 18 months of each other, three paperboys in the Des Moines, IA area all went missing during their morning route. The cases have never been solved. There are theories an ex-employee who was a creeper kidnapped them, and even a lone wolf type situation. It's a bizarre case that has baffled Iowa for years. -deleted

The disappearance of Zebb Quinn. He was 18 years old when he went missing in 2000. He was working his shift at a local Walmart and afterwards wanted to look at a new car with a colleague, when he allegedly received a call that made him take off frantically. After that he was never seen again.

The strangest thing is that a few days later his car was found in a parking lot with the headlights turned on, a pair of lips and an exclamation mark drawn on the back window in pink lipstick - and a live Labrador puppy sitting inside. -KatieAnchalie

The missing Sodder children and the fact the parents received a supposed photo of one of the boys years later.

On Christmas Eve, 1945, a fire destroyed the Sodder residence in Fayetteville, West Virginia. During the fire, George, Jennie, and four of the nine children escaped. The bodies of the other five children have never been found. The surviving Sodder family believed for the rest of their lives that the five missing children survived. -IamHOTUrNot

What happened to the Eilean Mòr lighthouse keepers? Most likely they were swept out to sea by violent waves, but no storms were reported on the dates (December 1900) they went missing, and if there were, why would they leave the safety of their lighthouse? -PothierM

The Yogurt Shop Murders that took place in Austin, Texas in late 1991. It's been the subject of a couple episodes on '48 Hours' and a book devoted to the case was published around five years ago: Who Killed These Girls? by Beverly Lowry. -NoodlesrTuff1256

In my opinion, it's the City of San Francisco train derailment that occurred in Harden, NV on 08/12/1939.

The train, run by the Southern Pacific Railroad at the time, derailed at a bridge over the Humboldt River at a speed range of 60-90 mph. The accident resulted in 24 fatalities and multiple injuries. Days later, Investigators discovered tools at the bottom of the Humboldt River, determining that the wreck was caused by sabotage of the rails. -Pete_D_301