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The legend of the Pied Piper of Hamelin comes to life when a possible proxy for the Slender Man removes the rats of Hamelin away. After the townsfolk refuse to pay the proxy, he led all of the children to parts unknown.
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In Romania, a woman named Olga Suti is driven insane by the Slender Man, murdering her entire family, and then burns to death after being lured into the fireplace by the entity.
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German artist Hans Holbein, also known as Hans Freckenberg, creates the “Der Ritter”, which is widely considered to be one of the first historical if artistic impressions of the Slender Man. The woodcut depicts a skeletal knight with unnaturally long arms. Holbein became a recluse in the following years, disappearing in 1543. The woodcut vanished, found in 1886 by renovators in a manorhouse once owned by Holbein's family, hidden in a walled up section of the fireplace.
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Cave paintings are found in the Serr da Capivara National Park in north-east Brazil, featuring a faceless figure resembling the Slender Man, suggesting the entity may be primeval.
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The Slender Man materialises in a school photograph of a school fair. All of the children present in the photo later died or disappeared.
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Following the disappearance of their daughter Maggie, her parents Alister and Claudia Markem contact famed spiritualist Madame Jessica de Ville to locate her. Paranormal expert Dr. Frederick von Hyde and engineer Dan Michelles attended. The exact events are unknown, but all attendees were found dead, save a missing Claudia. A surviving transcript implies Maggie was abducted by the Slender Man, who killed the attendees and then abducted Claudia.
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A group of Scottish soldiers pose for a photograph, with the Slender Man in the background. None of the soldiers were found after the photo was taken.
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The Henderson House Farm in Tryon, Polk County, North Carolina is rocked by mysterious events. Police found Ted Henderson with his dead wife’s body, having shot her, his daughter Tracy was missing, and the farm’s horses being torn apart. Ted is arrested for his wife’s murder but due to his state of mind, he is institutionalised in Jenkins Mental Hospital, Sandy Plains, Polk County. A photo taken a week before showed the Slender Man standing outside the barn.
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Three years to the day after the events at the farm, Ted is stirred from his non-responsive state by therapist Dr. Dauton, learning about the Slender Man's presence and how he tried to abduct Ted's family. Ted's wife Diane allegedly begged him to kill her, which he did with a gunshot. Ted fell silent again, before taking his life at 3AM that night.
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In August 1977, the Daniels family from Little Rock, Arkansas go camping in the Ozark National Forest, but are reported missing. Travis Grady, who was in the forest at the time, also disappeared after taking a photo for the family. Grady was suspected of possibly being involved in their disappearance.
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Howlsbury Elementary School is Seattle burnt to the ground under mysterious circumstances. Seven students and a teacher died before firefighters arrived. A photograph of the burning building features a figure visible on the roof. The photographer and other witnesses disappeared in the following weeks.
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In 1981, the bodies of the Daniels family and Travis Grady are found in Yellowstone National Park, mutilated and impaled on trees in a deep gorge. The children Jolene and John were not found. The FBI concluded that Grady may have been into occult practices, ultimately murdering the Daniels and then killed himself.
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In Stirling City, California, several children and teenagers go missing, with only a surviving photograph found, depicting a blurred individual who could be the Slender Man. A note was found attached to the photo - "We didn't want to go. We didn't want to kill them, but its persistent silence and outstretched arms horrified and comforted us at the same time..." No other information was provided.
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In Morgan County, Tennessee, Thomas Nealy is brought in for questioning over the disappearance of his daughter Jessica. Officer Elliot Lee interviewed Nealy, who quickly turned emotional and then hysterical, claiming a man "with no face" abducted his daughter. Gunshots from the interview room alerted officers, but they found both Nealy and Lee were missing - the interview recording ended with Nealy screaming that the man was behind Lee, who fired his gun.
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In Stirling City, California, another tragedy occurs as fourteen children vanish from a public play area, along with their minder Mary Thomas, a local librarian and amateur photographer.
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A week after the disappearances, Stirling City's public library burnt down under suspicious circumstances. Recovered from the ruins was Mary Thomas' camera, featuring two recovered photographs, one depicting the children in the play area they vanished from.
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Hans Baldung’s painting “The Three Ages of Women and Death”, painted in 1510, was scanned with x-rays by an Austrian team of analysts, discovering the skeletal figure had several extra limbs beneath the layers of the painting. This discovery was kept secret from the public.
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Two English boys exploring an abandoned London Underground station disappear.
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Three campers disappear in the Tenmile Range, Colorado. The men's bodies were found on May 22nd, hanging from tree branches. By May 28th, the police assumed a cult was responsible.
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In the American town of Clarkson, West Virginia, the small police force were haunted by the Slender Man whilst investigating the disappearances of local children. The force consisted of Sheriff Jonathan Flake, Deputy Tom Hibbert, Marc Lieberman and Evan Smith. Lieberman and Smith disappeared on the 11th when fog surrounded the police station. By the 14th, Flake went mad. When outside help arrived, Hibbert was missing and Flake was found dead from self-inflicted wounds.
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The Slender Man haunts visitors to the Wilkes Estate, England.
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In Nottingham, England, 6-year old Amelia Hammond went missing and her brother Andrew as a witness. In a recorded interview between his mother Lauren, the police chief Sebastian Cross and psychiatrist Dr. Joseph Derekson, Andrew described the Slender Man. Lauren and Cross stepped outside, but Derekson asked Andrew where he had seen the Slender Man. Andrew screamed and the room went silent. When Lauren and Cross entered, Andrew was gone and Derekson was in a coma.
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An unnamed 20-year old woman was placed in Hamilton Psychiatric Hospital, Hamilton, Ontario, Canada. She speaks of the Slender Man and claims her therapist Dr. Harris will die. She disappears from her cell on July 17th. Dr. Harris disappeared on August 30th.
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Two German children, Nicholas and Stacy Howards, go missing after a photo is taken of them at a playground in Munich. The Slender Man was identified in the photograph.
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Two students hunting in the Steinmen Woods, Switzerland encountered the Slender Man and one was killed. Later investigations revealed twenty-two people had died in the area.
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Jake Greenwood, an 8-year old from Wichita goes missing. Beforehand he commented that he was being bothered by the Slender Man.
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Sergeant Paul Campbell, an Irish policeman, encounters the Slender Man during a walk in the local forest. He investigates the entity and becomes obsessed with it. In November, he was remanded into psychiatric care at a hospital in Galway, Ireland for an acute stress disorder, anxiety and a Panphobia.
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Three skiers Amanda Fischer, Douglas Bellanger, and Natasha Pierce, disappear whilst on holiday at Mica Mountains Resort, in Jasper, Alberta, Canada. Friend Thomas Chambers was interrogated by police but he denied knowing anything. Chambers vanished on January 21st and the body of Amanda’s body in a nearby wood, her body strung up and contorted.
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Slender Man is brought to light on Something Awful.com and becomes an internet phenomenon.
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As the rumours of the Slender Man sweep the internet, someone by the name of "Jay" begins posting a series of videos online called Marble Hornets, depicting footage of an abandoned student film made by Alex Kralie, in which the Slender Man has appeared numerous times.
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The team Everyman HYBRID post their first video on YouTube, intending for it to be a series of exercise videos. However, the Slender Man begins to appear in the new videos, and occasionally, another creature known as the Rake. The series concluded in 2019.
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Christian J. Craughwell, an Irish documentarian and paranormal investigator, begins making a documentary on the Slender Man.
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Craughwell travels to America to meet an anonymous man who claims to have encountered the Slender Man. In Fremont County, Colorado, Craughwell and John Smith venture into the woods. Smith claims the Slender Man is a unique species of cephalopod. They find several toys pinned to trees, and Smith runs off and attacks the Slender Man but is killed. Craughwell flees, briefly spotting the Slender Man from his car.
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Continuing his investigation, Craughwell visits a psychiatric clinic where he meets Dr. Duggan. During their interview, Dr. Duggan explains one of his patients, a 20-year old man named Ray Macguire, who suffered from a severe case of panphobia, and mentioned the Slender Man. The patient committed suicide on December 11th, 2011.
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Craughwell receives an anonymous letter regarding the Slender Man, tracking the site to a local windmill farm. Craughwell does not find anything of interest.
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The Slender Man is placed into a game inspired by the internet phenomenon.
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Paul Campbell dies of heart failure, still under psychiatric care. His funeral five days later was a somber affair with many relatives and friends absent.
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Solicitors working on Campbell's behalf give Craughwell a key to a locker in Huston Station, Dublin. The locker contained a letter and map related to Greenwood Quarry. The letter was written by the quarry's owner Jonathan Ackerly, until it was abandoned when men were killed by the Slender Man.
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Craughwell goes missing. His car is found in Greenwood, Ireland.