The Chilling Story of the Hinterkaifeck Killings, Germany's Most Famous Unsolved Crime

A shrine to the victims of the Hinterkaifeck murders
A shrine to the victims of the Hinterkaifeck murders
Wikimedia // Copyrighted free use

The Hinterkaifeck farmstead was a lonesome place. Located near the woods outside the Bavarian town of Gröbern, about an hour's drive from Munich and a half-mile behind, or "hinter," the town of Kaifeck, it was the home of 35-year-old Viktoria Gabriel and her two children, 7-year-old Cäzilia and 2-year-old Josef, as well as her elderly parents Andreas and Cäzilia Gruber.

The family was known for keeping to themselves. Still, neighbors grew concerned on April 1, 1922, when young Cäzilia missed school and the entire family failed to show up to the church where Viktoria was a member of the choir. Cäzilia missed school again on April 3, and by then, mail for the family had begun to pile up at the local post office. On April 4, the family's neighbors decided to investigate. Lorenz Schlittenbauer, a farmer who lived nearby, led the search party.

What they discovered likely haunted them for the rest of their days.

In the barn, the search party found four brutally battered bodies covered with hay. Inside the house, they discovered the bodies of 2-year-old Josef and the maid, Maria Baumgartner. It had been Baumgartner's first day on the job—the previous maid had abandoned her position due to a fervent belief that the house and farm were haunted.

Nearly 100 years later, dozens of people have been arrested as suspects in the crimes, though no one has ever been found guilty. The Hinterkaifeck murders remain one of Germany’s eeriest—and most famous—unsolved crimes.

FOOTSTEPS IN THE SNOW

The reports from the family's autopsies, conducted by court physician Dr. Johann Baptist Aumüller, paint a horrifying picture of their injuries. The elder Cäzilia showed signs of strangulation and seven blows to the head, which left her with a cracked skull. The face of her husband, Andreas, was caked with blood, and his cheek bones protruded from shredded flesh. Viktoria’s skull was also smashed; her head showed nine “star-shaped” wounds and the right side of her face had been hit with a blunt object. The younger Cäzilia's lower jaw had been shattered and her face and neck covered in gaping, circular wounds.

While the elder Cäzilia, Andreas, and Viktoria likely died instantly from expertly delivered blows from a mattock—a pickax-like tool used for digging and chopping—the autopsy found that the younger Cäzilia likely remained alive and in shock for several hours after her attack. She had ripped her own hair out in clumps.

Inside the farmhouse, little Josef and the maid Maria Baumgartner had met a similar fate. Maria was killed by crosswise blows to the head in her chambers, and Josef by a heavy blow to the face in his cot in Viktoria’s room. Like the bodies in the barn, theirs were also covered: Maria’s with her sheets, and Josef’s with one of his mother’s dresses. The farm animals and a Pomeranian watchdog remained unharmed. Chillingly, they had even been taken care of and fed in the several days that passed between the murders and their terrible discovery.

Police initially suspected vagrants or other traveling men of ill-repute, but tossed out this theory after large sums of money were found within the house. Besides the bodies and the hay and bedsheets used to cover them, nothing had been disturbed—though the killer clearly remained at the farm for several days, feeding the animals, eating meals, and lighting fires in the hearth. When the police questioned the former maid about her belief that the property was haunted, she said she had come to that conclusion after constantly hearing sounds in the attic and experiencing an unsettling feeling of being watched.

Though Andreas did not believe her, he too had confided in neighbors about some strange happenings in the days before the murder: A newspaper he did not buy was found in his home, and a set of footsteps was discovered leading from the forest to the farmstead. The footsteps were set in pristine and unmarked snow, leading in only one direction. Nobody at Hinterkaifeck knew whom they belonged to.

To make matters even stranger, one of the family’s two keys disappeared shortly before the murder. Combined with the footsteps from the woods, sounds in the attic, and a smoking chimney in the days following the crime, these odd details paint a horrifying picture of a ruthless intruder who may have taken up residence in the house.

PRIVATE MYSTERIES

The Hinterkaifeck farm a few days after the murdersWikimedia // Public Domain

Suspicion eventually settled on several men connected to the family, in part because of some domestic turbulence at the farm.

Viktoria was a widow whose husband had died in WWI, and the parentage of her son Josef remains a mystery to this day. She had had a relationship with Lorenz Schlittenbauer—the man who had led the search party that discovered the bodies—and both had publicly referred to Josef as their child. They planned to get married—until Andreas interfered, and their relationship ended. Lorenz eventually married someone else; though he and his wife welcomed a baby, it tragically died a few weeks later.

Police zeroed in on Lorenz as a suspect. They theorized that—traumatized by the death of his baby and unwilling to pay child support for Josef—he had come to the farm (located only a few hundred yards from his own) and murdered Viktoria and her family. The theory was bolstered by the fact that those with him during the initial investigation had found his behavior suspicious; they said that he acted nonchalant, viewing and handling the bodies without signs of repulsion. He also knew his way around the farm.

The police questioned Lorenz extensively, but were unable to conclusively place him at the crime scene. His behavior could be explained by shock, they reasoned, and his knowledge of the farm by his relationship with Viktoria.

With Lorenz eliminated, police considered Viktoria’s husband, Karl Gabriel, a suspect, theorizing that he came back from the war and killed them. That theory didn't last long: They soon discovered that Karl had been reported slain in France almost a decade before, with many of his fellow soldiers attesting to seeing his body.

Another theory floated at the time was that Josef was actually the child of Viktoria and her own father, Andreas, and that one of them had killed the entire family before turning the mattock on themselves. Andreas's proclivities for incest and abuse were frequently discussed in the neighboring town; supposedly, Andreas had had other children with Cäzilia besides Viktoria, but she was the only one to survive his violent hands into adulthood. But none of the injuries to the bodies could be explained as self-inflicted, so it wasn't possible that the crimes were a murder-suicide perpetrated by Viktoria or Andreas.

The murderer had to be someone who didn't live at the farm. But who?

Only one thing could be stated with any degree of certainty: The crimes had been committed by someone who knew their way around a farm, as evidenced by the continued upkeep after the murders and by the expert wielding of the mattock. The brutality of the murders suggested that they had been committed by someone with a personal vendetta against one or several of the Grubers.

But police at the time failed to come up with answers and eventually closed the case—though it would not remain closed.

SILENT SKULLS

The Hinterkaifeck case has been reopened several times in the last 95 years. Even clairvoyants have been given a chance at it—in his book Hinterkaifeck: Spuren eines mysteriösen Verbrechens, author Peter Leuschner details how the bodies of the Gruber family and the maid were beheaded not long after the original autopsies and the skulls sent on to Munich, where they were examined for metaphysical clues. Sadly, the skulls did not speak.

In 1923, the farm was demolished, and the family lays buried—without their heads—in a plot in Waidhofen; the skulls were lost during WWII and never returned. Initial evidence gathered at the crime scene is either also lost or too ancient to give up any secrets, though in 2007 the Fürstenfeldbruck Police Academy took the Hinterkaifeck Murders on as a cold case. Because of the relatively basic forensic techniques employed during the original investigation, as well as missing evidence and the later deaths of some suspects, they were unable to conclusively identify the murderer—though they did all agree on a theory.

Out of respect for surviving family members of people related to the crime, however, that theory remains a secret. At this point, it seems unlikely the public will ever know who committed the murders, or why. Whatever secrets the Gruber family kept in life and death, they now slumber alongside them in the grave.

10 Killer Gifts for True Crime Fans

Ulysses Press/Little A
Ulysses Press/Little A

This article contains affiliate links to products selected by our editors. Mental Floss may receive a commission for purchases made through these links.

Humans have a strange and lasting fascination with the dark and macabre. We’re hooked on stories about crime and murder, and if you know one of those obsessives who eagerly binges every true crime documentary and podcast that crosses their path, you’re in luck—we’ve compiled a list of gifts that will appeal to any murder mystery lover.

1. Donner Dinner Party: A Rowdy Game of Frontier Cannibalism!; $15

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The infamous story of the Donner party gets a new twist in this social deduction party game that challenges players to survive and eliminate the cannibals hiding within their group of friends. It’s “lots of fun accusing your friends of eating human flesh and poisoning your food,” one reviewer says.

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2. A Year of True Crime Page-a-Day Calendar; $16

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With this page-a-day calendar, every morning is an opportunity to build your loved one's true crime chops. Feed their morbid curiosity by reading about unsolved cases and horrifying killers while testing their knowledge with the occasional quizzes sprinkled throughout the 313-page calendar (weekends are combined onto one page).

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3. Bloody America: The Serial Killers Coloring Book; $10

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Some people use coloring books to relax, while others use them to dive into the grisly murders of American serial killers. Just make sure to also gift some red colored pencils before you wrap this up for your bestie.

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4. The Serial Killer Cookbook: True Crime Trivia and Disturbingly Delicious Last Meals from Death Row's Most Infamous Killers and Murderers; $15

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This macabre cookbook contains recipes for the last meals of some of the world’s most famous serial killers, including Ted Bundy, Aileen Wuornos, and John Wayne Gacy. This cookbook covers everything from breakfast (seared steak with eggs and toast, courtesy of Ted Bundy) to dessert (chocolate cake, the last request of Bobby Wayne Woods). Each recipe includes a short description of the killer who requested the meal.

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5. Ripped from the Headlines!: The Shocking True Stories Behind the Movies’ Most Memorable Crimes; $15

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In this book, true crime historian Harold Schechter sorts out the truth and fiction that inspired some of Hollywood’s best-known murder movies—including Psycho (1960), Scream (1996), Arsenic and Old Lace (1944), and The Hills Have Eyes (1977). As Schechter makes clear, sometimes reality is even a little more sick and twisted than the movies show.

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6. The Deadbolt Mystery Society Monthly Box; $22/month

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Give the murder mystery lover in your life the opportunity to solve a brand-new case every single month. Each box includes the documents and files for a standalone mystery story that can be solved alone or with up to three friends. To crack the case, you’ll also need a laptop, tablet, or smartphone connected to the internet—each mystery includes interactive content that requires scanning QR codes or watching videos.

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7. In Cold Blood; $10

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Truman Capote’s 1965 classic about the murder of a Kansas family is considered by many to be the first true-crime nonfiction novel ever published. Capote’s book—still compulsively readable despite being written more than 50 years ago—follows the mysterious case from beginning to end, helping readers understand the perspectives of the victims, investigators, and suspects in equal time.

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8. Stay Sexy & Don’t Get Murdered: The Definitive How-To Guide; $13

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Any avid true crime fan has at least heard of My Favorite Murder, the popular podcast that premiered in 2016. This book is a combination of practical wisdom, true crime tales, and personal stories from the podcast’s comedic hosts. Reviewers say it’s “poignant” and “worth every penny.”

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9. I Like to Party Mug; $12

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This cheeky coffee mug says it all. Plus, it’s both dishwasher- and microwave-safe, making it a sturdy gift for the true crime lover in your life.

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10. Latent Fingerprint Kit; $60

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Try your hand (get it?!) at being an amateur detective with this kit that lets you collect fingerprints left on most surfaces. It may not be glamorous, but it could help you solve the mystery of who put that practically empty carton back in the refrigerator when it barely contained enough milk for a cup of coffee.

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New Online Art Exhibition Needs the Public’s Help to Track Down Lost Masterpieces by Van Gogh, Monet, and More

Vincent van Gogh's original Portrait of Dr. Gachet wasn't stolen, but it hasn't been seen in 30 years.
Vincent van Gogh's original Portrait of Dr. Gachet wasn't stolen, but it hasn't been seen in 30 years.
Vincent van Gogh, Wikimedia Commons // Public Domain

If you wanted to compare both versions of Vincent van Gogh’s Portrait of Dr. Gachet in person, you couldn’t. While the second one currently hangs in Paris’s Musée d'Orsay, the public hasn’t seen the original painting since 1990. In fact, nobody’s really sure where it is—after its owner Ryoei Saito died in 1996, the precious item passed from private collector to private collector, but the identity of its current owner is shrouded in mystery.

As Smithsonian Magazine reports, Portrait of Dr. Gachet (1890) is one of a dozen paintings in “Missing Masterpieces,” a digital exhibit of some of the world’s most famous lost artworks. It’s not the only Van Gogh in the collection. His 1884 painting The Parsonage Garden at Nuenen in Spring was snatched from the Netherlands’ Singer Laren museum earlier this year; and his 1888 painting The Painter on His Way to Work has been missing since World War II. Other works include View of Auvers-sur-Oise by Paul Cézanne, William Blake’s Last Judgement, and two bridge paintings by Claude Monet.

Paul Cézanne's View of Auvers-sur-Oise was stolen from the University of Oxford's art museum on New Year's Eve in 1999.Ashmolean Museum, Wikimedia Commons // Public Domain

The new online exhibit is a collaboration between Samsung and art crime expert Noah Charney, who founded The Association for Research into Crimes Against Art. It isn’t just a page where art enthusiasts can explore the stories behind the missing works—it’s also a way to encourage people to come forward with information that could lead to the recovery of the works themselves.

“From contradictory media reports to speculation in Reddit feeds—the clues are out there, but the volume of information can be overwhelming,” Charney said in a press release. “This is where technology and social media can help by bringing people together to assist the search. It’s not unheard of for an innocuous tip posted online to be the key that unlocks a case.”

The exhibition will be online through February 10, 2021, and citizen sleuths can email their tips to missingmasterpieces@artcrimeresearch.org.

[h/t Smithsonian Magazine]