The Rosenheim Poltergeist: Inside Germany’s Most Credible Tech Haunting

A technician sits hunched over a heavy metal desk, staring blankly at a mechanical telephone logging meter that shouldn't be ticking. Out in the main office. The sudden, rhythmic clacking of automatic switches echoes through the quiet room. Sounding exactly like a human finger frantically spinning a heavy rotary dial over and over again. Nobody is touching the handsets, yet the machine keeps recording outbound connections. Racking up hundreds of calls to a single local number in a matter of minutes. How does a business function when its very infrastructure seemingly turns against its employees?

This isn't an isolated technical glitch or a simple accounting error by the local utility company. It is the opening salvo of what would become one of the most rigorously documented, scientifically vetted anomalies in modern paranormal history. Let's break down the bizarre events that turned a quiet Bavarian law practice into a living laboratory for the unexplained.

While researching this case, you can explore our complete database of phenomena over on our master Ghosts and Hauntings Archive.

Telemetry and Light Bursts: The Anatomy of a High-Tech Haunting

For researchers investigating haunted places in Germany. The 1967 Rosenheim timeline marks a monumental shift in anomalous data collection. Traditional folklore relies heavily on unverified eyewitness testimonies of visual phantoms inside ancient castles.

In sharp contrast. The anomalies at 13 Königstrasse were captured in real-time by high-precision mechanical and electrical instruments. Parapsychologists classify this case as a textbook example of a spontaneous physical manifestation. Where raw kinetic energy systematically bypassed defensive engineering grids. Establishing a physical blueprint that modern electronics still struggle to explain.

The Unexplained Phone Glitches At Königstrasse

In the autumn of 1967. A respected lawyer named Sigmund Adam began noticing that daily operations at his office were falling apart. His practice was located at 13 Königstrasse in the beautiful town of Rosenheim, Bavaria. At first, the problems just seemed like typical post-war infrastructure hiccups. Outgoing calls would suddenly drop mid-conversation for no apparent reason. Then, the office desktop phones would start ringing off the hook, but when staff picked up the receiver, they were met with nothing but dead air.

Eventually, the situation boiled over when every single phone line in the office began ringing simultaneously. This wasn't a massive corporate headquarters. It was a small, focused team. Working alongside Herr Adam were his office manager, Johannes Englehard, two administrative clerks named Gustel Huber and Anne-Marie Schneider, and a part-time junior employee known as Frau Bielmeier. Frustrated by the constant disruptions to his legal work, Herr Adam finally decided to call in the engineers to sort out the mess.

Siemens Engineers Confront A Technical Impossibility

The first expert on the scene was a field technician from Siemens. The prominent electronics firm that had originally manufactured and installed the office's telecommunication setup. He ran through his standard diagnostic protocols but honestly couldn't find a single thing wrong with the hardware. Yet, the moment he stepped away, the malfunctions started right back up. The engineer returned to 13 Königstrasse, scratched his head, and replaced all the physical telephonic equipment anyway. Just to rule out a hidden manufacturing defect.

It didn't help. When the brand-new Siemens hardware immediately suffered the exact same dropouts and ghost rings. The company suggested that the source of the trouble had to be external. They believed the fault lay deep within the municipal lines managed by the regional Post Office.

The Mystery Outbound Calls To The Speaking Clock

When the Post Office workers investigated, they were equally stumped. They couldn't find any physical damage or routing errors along the street lines, but they co-operated anyway. They swapped out the external lines. Replaced the office telephone units yet again, and installed a highly accurate mechanical logging meter to record every single incoming and outgoing transmission.

On October 5, 1967, the newly installed meter suddenly crackled into action. It logged a distinct outgoing call, even though every person in the office was accounted for and nobody was holding a receiver. Two weeks later, the exact same phenomenon occurred. This second time, a local client named Dr. Schmidt happened to be visiting the law office. Witnessing the ghost call firsthand, he signed a formal, written statement detailing the event so Herr Adam could present it as proof to the utility inspectors.

But the Post Office had their own evidence. They pulled the official logs from the mechanical meter covering the previous five weeks of activity. The printouts were staggering. Hundreds of unauthorised calls had been dialed from the office lines, and a massive portion of them targeted the exact same number. 0119, the local municipal speaking clock.

A Physical Challenge To The Laws of Telephony

Herr Adam and his entire staff flatly denied making the calls, but the Post Office stood firm. Asserting that the logs were genuine and the signals undoubtedly originated from inside the law office. When they slapped Herr Adam with an astronomical phone bill, the lawyer was absolutely furious. He began meticulously studying the timestamps on the log sheets and spotted an anomaly that broke the laws of physics. On one specific afternoon. The speaking clock had been dialed 46 times within a tight 15-minute window.

To understand why this is impossible, you have to look at the vintage hardware involved. These weren't modern digital touch-tone keypads. They were heavy mechanical rotary dials. Physically pulling the dial for the digits 0-1-1-9 and waiting for the spring-loaded wheel to return to its starting position took approximately 17 seconds. If you do the math. Executing 46 separate dial cycles would take far longer than fifteen minutes. Meaning it was physically impossible for any human being to manually dial that number so rapidly on that equipment.

The Post Office didn't care about technical paradoxes. They demanded full payment of the bill. When Herr Adam refused to pay for calls his staff didn't make, the utility company stripped the office of its communication network. Leaving behind just a single telephone equipped with a physical metal lock over the dial. Only Herr Adam held the key to that lock. Yet the mechanical meter down the street kept right on logging phantom calls to the speaking clock.

Exploding Light Bulbs And The Arrival of Paul Brunner

The telephone issues were basically just a teaser for what was coming next. The phenomena quickly escalated from communication glitches to aggressive physical disruptions. On October 20, every single light fixture in the office suddenly died at the exact same moment. Herr Adam called a local electrician, Herr Bauer, to fix what he assumed was a blown master fuse.

What Bauer found blew his mind. The fuses were fine, but every single light bulb throughout the entire suite had been physically unscrewed from its socket. Thinking it was an elaborate practical joke by the staff, the puzzled electrician screwed them all back in. He finished packing his tools, but before he could even exit the front door, the office went pitch black again. He walked back into the rooms and confirmed that every bulb had once again been completely unscrewed.

A few days later, the electrical system took another hit when all the main fuses violently popped out of the wall panel. Completely severing the office from the power grid. Realising this was way beyond a standard wiring issue, Herr Bauer handed the case over to the regional power company. On November 15, the utility provider sent their top specialist, a senior engineer named Herr Paul Brunner, to conduct a comprehensive forensic audit of the building’s electrical network.

The Battle Against The Industrial Power Grid

Brunner meticulously stripped down and inspected the wiring across the entire office building. He found zero structural defects, code violations, or natural grounding faults. To track down the anomaly, he set up sensitive engineering meters to monitor power consumption, voltage fluctuations, and unexpected shifts in local magnetic fields. He replaced the standard pop-out fuses with heavy-duty, screw-in industrial models and literally sealed the panel shut with tamper-evident security wax. Confident that no one could mess with the system. He told Herr Adam he would return in a couple of weeks to check the data logs, requesting a call if anything strange happened in the interim.

He didn't have to wait very long at all. On November 20, Herr Adam called Brunner back to the scene. The senior engineer arrived with a full squad of specialised analysts and electrical technicians, only to find the office in absolute chaos. During the morning hours, the bulbs had undone themselves inside their sockets yet again. More alarmingly, a large fluorescent light tube mounted to the ceiling in Herr Adam’s private office had violently torn itself out of its heavy metal brackets, leaped into mid-air, and smashed to pieces on the floor.

When Brunner pulled the data from his sealed monitoring meters, the readouts confirmed massive, unnatural power surges and extreme voltage fluctuations. Crucially, these spikes occurred exclusively during normal business hours. The largest recorded energy spike on the graphs aligned perfectly with the exact minute the fluorescent tube jumped from the ceiling.

The Generator Test That Changed Everything

The next day, Brunner returned with standard incandescent light bulbs to replace the volatile fluorescent tubes. While his team was working on the ceilings, the office photocopier spontaneously malfunctioned, loudly venting its chemical toner and liquid developers all over the floor. The very next day, a massive, unexplainable power surge ripped through the lines, instantaneously blowing out every active light bulb in the office.

Brunner was determined to isolate the variable. Suspecting that the issue might be a massive power fluctuation originating from the town's main electrical grid, he bypassed the building's standard supply entirely. He arranged for the office to be hooked up directly to the local power substation via heavy-duty, insulated industrial cables. The violent power surges didn't stop.

Running out of conventional engineering solutions, Brunner took the ultimate step on Monday, November 27. He completely cut the law office off from the municipal power grid and hooked the entire suite up to an independent, fuel-powered generator. This meant the office was a completely closed loop, entirely disconnected from the outside world.

It changed absolutely nothing. Throughout the day, the independent generator ran flawlessly in the courtyard, yet inside the office rooms, the light bulbs began exploding one by one. Sharp shards of hot glass showered the desks and floors. The monitoring instruments continued to register massive, impossible voltage spikes generated from within a disconnected, self-contained circuit.

Objects Defy Gravity In The Law Office

By Tuesday morning, it became completely undeniable that the team wasn't dealing with a conventional failure of the telephone network or the electrical grid. The phenomena began breaking away from electrical conduits entirely and manifesting as raw, kinetic energy. Heavy, industrial light fixtures hanging from the ceiling suddenly began swinging violently from side to side like pendulums.

Watching the fixtures sway, Herr Adam tried to cut the tension with a bit of dark humor, remarking to his staff, "All we need now is for the paintings to move".

Literally seconds after the words left his mouth, a heavy framed painting hanging on the wall began revolving rapidly. The artwork was suspended from a sturdy metal nail by a thick cord. When the staff rushed over to examine it, they found the hanging cord had been wound tightly around the nail multiple times. Right after that, other paintings across the office began shifting and sliding along the walls. Two large pieces tore free from their mountings completely, crashing onto the hardwood floor and shattering their frames.

Faced with undeniable physical data and visual evidence that defied every rule of mechanical engineering, Herr Paul Brunner closed his official investigation file. He wrote a concluding statement that remains famous in the annals of anomalous research. Noting that it was necessary to postulate the existence of a force entirely unknown to modern science. An energy beyond comprehension that showed clear signs of intelligent control.

Criminal Investigation Turns To Paranormal Research

Seeking a second opinion, the regional power company brought in two independent physicists. Dr. Karger and Dr. Zicha, to meticulously review Brunner's recorded meter data and investigate the office. They also ran a forensic review of the Post Office's telephone logs. After ruling out electromagnetic radiation, acoustic resonance, infrasound, and magnetic anomalies, the physicists agreed with Brunner's assessment. The kinetic events and electrical spikes were under some form of intelligent control.

Meanwhile, Herr Adam had already contacted the local police department. He was convinced that someone was using high-tech sabotage to ruin his legal practice, run up bankrupting phone bills, and terrify his administrative staff. Once the engineers packed up their gear, a sharp criminal detective named Officer Wendl moved into the office to launch a formal investigation.

Wendl didn't waste time looking into the "how" of the supernatural phenomena. Instead, he focused entirely on the traditional police work of "who" and "why". He worked under the logical assumption that a disgruntled former client, a legal adversary, or an employee with a massive grudge was using sophisticated trickery to target Herr Adam. He dug deep into Adam's past court cases, financial investments, and employment records.

The Focal Point Behind The Rosenheim Poltergeist

At first, Wendl’s background checks came up completely dry. But when he began cross-referencing the exact dates and times of the physical disturbances against the office attendance logs, a clear pattern emerged. One of the administrative clerks, an 18-year-old woman named Anne-Marie Schneider (referred to in some later analytical research papers by her married name, Schaberl), was deeply unhappy with her employment. She felt trapped in her role and blamed Herr Adam for the toxic atmosphere and petty arguments brewing among the office staff.

The Science of Stress: Anne-Marie Schneider as an RSPK Agent

When Professor Hans Bender and the researchers from the Freiburg Institute of Parapsychology began mapping the office's data logs. They applied a modern parapsychological framework known as Recurrent Spontaneous Psychokinesis (RSPK). Under the RSPK model, physical disruptions, such as exploding light bulbs, shifting furniture, and rapid-fire telephone signals, are not caused by discarnate demons or external spirits.

Instead, the anomalies function as an unconscious release of intense, repressed psychological tension. Anne-Marie's severe occupational boredom, acute anxiety, and internalised emotional frustration acted exactly like a biological battery. Converting subconscious trauma into raw, localised kinetic surges that manipulated the physical environment around her.

Wendl discovered that the exploding bulbs, phone dials, and swinging fixtures happened exclusively on days when Anne-Marie was physically present in the building. On her scheduled days off, the law office was completely peaceful and quiet. To test his hypothesis without causing a panic, Wendl quietly asked Herr Adam to send his staff home on staggered, rotating vacations. When it was Anne-Marie's turn to take a few days off, every single trace of anomalous activity stopped instantly.

Convinced he was dealing with a clever hoaxer using some sort of hidden electronic device, Wendl set up a sting operation. He placed undercover officers inside the office rooms to watch the young clerk's every move. Yet, even with multiple trained police eyes tracking her hands, arms, and feet, the disruptions kept right on happening. The light bulbs blew and the files misplaced themselves while her hands were folded neatly in her lap.

The Unshakable Cabinet And The Freiburg Institute

The breaking point for the police investigation came on an afternoon when Anne-Marie Schneider and her fellow clerk, Gustel Huber, were working alone in a central room. Suddenly, a massive, solid oak storage cabinet began sliding heavily across the floor, moving away from the wall. This wasn't a flimsy particle-board desk. It was an immense piece of historic office furniture. It was so heavy that even if Huber and Schneider had teamed up and physically strained against it with all their might, they couldn't have shifted it an inch. It took two full-grown, athletic police officers struggling together just to slide the cabinet back into its original position against the wall.

Officer Wendl presented his dossier to Herr Adam. Both men agreed that the 18-year-old clerk was undeniably the focal point of the chaos, but neither had any logical explanation for how a teenage girl could trigger massive industrial power surges or move heavy oak furniture with her mind.

With the local authorities completely out of options, word of the bizarre Bavarian law office leaked to national newspapers. The sensational headlines caught the attention of Professor Hans Bender. A highly respected psychologist and the director of the Institute for Frontier Areas of Psychology and Mental Health (often called the Freiburg Institute of Parapsychology). Bender offered his academic services to Herr Adam, transforming the active legal office into a highly controlled paranormal investigation site.

Inside Hans Bender’s Paranormal Investigation

Professor Bender and his research team brought in advanced equipment to track the young woman's movements. They quickly confirmed what the police had observed. The physical disturbances occurred only when Anne-Marie was present in the room. The team documented that the heavy glass fixtures hanging from the ceiling would begin swinging wildly the exact moment she walked directly underneath them.

Bender spent hours interviewing the teenager to understand her mindset. The most revealing breakthrough involved those impossible, rapid-fire phone calls to the speaking clock. Under gentle questioning, Anne-Marie admitted that she had developed a deep, obsessive fixation on the office clocks. She was so profoundly bored by her repetitive clerical tasks and so stressed by the negative office environment that she spent her entire shift staring at the hands of the clock, desperate for the workday to end.

It was Bender's professional assessment that Anne-Marie was unconsciously channeling her immense internal frustration, anxiety, and pent-up psychological trauma into raw psychokinetic energy. In the realm of parapsychology. This is a classic profile for a poltergeist agent. It's essentially like a safety valve on a steam engine. When the emotional pressure builds up too high in an individual who lacks a healthy outlet. The energy bursts outward, manipulating the physical environment instead.

Laboratory Testing At The Freiburg Institute

To test his hypothesis and rescue Herr Adam's law practice from further property damage. Bender convinced Anne-Marie to leave the Rosenheim office temporarily. He brought her to his laboratory facilities at the Freiburg Institute to undergo a battery of standardised tests for Extra-Sensory Perception (ESP) and psychokinesis. The moment she stepped onto the train out of Rosenheim, the chaotic activity at 13 Königstrasse stopped dead.

Initially, her laboratory test scores were entirely average. Showing no signs of inherent psychic abilities under standard baseline conditions. However, Bender altered his methodology. He began interviewing her about a severe, traumatic long-term illness she had endured for a full year during her childhood. The moment the psychological weight of that past trauma was actively brought to the surface, her testing scores on the laboratory equipment spiked dramatically.

Bender concluded that her intense, highly sensitive personality profile acted as a bridge for these anomalous physical manifestations. He hoped that by analysing her under laboratory conditions, they might learn to control the energy. But a research lab isn't a long-term career, and eventually, the young woman had to return to her normal life back in Bavaria.

The Aftermath And The End of The Rosenheim Visitation

When Anne-Marie returned to her desk at Herr Adam's practice, the exploding bulbs, swinging paintings, and phantom phone logs immediately resumed. Realising that his business simply could not survive the ongoing chaos and physical destruction. Herr Adam made the difficult but necessary choice to let her go, officially terminating her employment.

After leaving 13 Königstrasse, Anne-Marie moved to the city of Munich to find a fresh start. Interestingly, the specific poltergeist manifestations never returned to Herr Adam’s legal office. Nor did they follow her to her new residence in the exact same format. However, her subsequent employment path was marred by strange, tragic coincidences. At her next two jobs, unusual disruptions occurred, and her new colleagues even attempted to blame her for the accidental death of a coworker. There was absolutely zero evidence to support these workplace accusations, but the toxic rumors forced her to keep moving from job to job.

Her personal life suffered a major blow when her fiancé suddenly called off their wedding engagement. His explicit reason for the breakup was incredibly bizarre. He claimed that every single time he took Anne-Marie out to a local bowling alley, the automated electronic scoring systems would completely malfunction and crash. It seemed her subconscious frustration was still leaking into local electronic circuitry.

True peace only arrived when she met another man, got married, and stepped away from the stressful corporate world to settle down and raise a family. Once she was secure in a supportive, stable home environment, the anomalous energy faded away completely. Leaving her to live out the rest of her life in quiet anonymity.

Evaluating The Scientific Consensus And Skeptical Views

When we look back at the Rosenheim case through a modern historical lens. Researchers often point out that this case was unique because it occurred entirely within a commercial place of business rather than a private residence. While older folklore usually details spirits haunting family homes. Many of those historical cases actually occurred on active working farms, family-run pubs, or artisanal workshops where the boundary between home life and daily labor was blurred. So, the corporate setting of Rosenheim might not be the radical departure it initially seemed to be.

What truly sets Rosenheim apart is the sheer volume of high-level professional scrutiny it received. It brought together civil engineers, master electricians, corporate technicians, local police detectives, laboratory physicists, and academic psychologists. All of whom openly admitted to being utterly mystified by what they recorded on their instruments.

Of course, the skeptical community has offered alternative explanations over the years. Skeptics like Albin Neumann and foreign magic investigators suggested that the physical movements could have been achieved through clever sleight-of-hand or hidden nylon threads pulled by Anne-Marie during moments of distraction. They argued that the busy environment of a law office provides the perfect cover for simple trickery.

The Magicians' Audit: Albin Neumann and James Randi

The sheer volume of cross-vetted instrumentation data did not stop the global skeptical movement from staging an intensive counter-investigation. Renowned German illusionist Albin Neumann. Collaborated alongside world-famous Canadian-American stage magician and escape artist James Randi. They launched a rigorous audit of the Freiburg Institute's findings.

Randi and Neumann aggressively argued that the entire Rosenheim affair was an elaborate, human-engineered hoax. They demonstrated that a highly coordinated teenager utilising hidden nylon threads, basic misdirection, and clever sleight of hand. Could easily replicate swinging wall paintings and displaced files during brief moments of staff distraction.

However, this conventional counter-argument famously struggled to explain the synchronous mechanical data sheets. Nylon threads could not physically manipulate an independent, fuel-powered generator or manually execute impossible rotary dial connections to the speaking clock (Zeitansage) within a locked telephone frame.

This conventional explanation struggles to account for the detailed engineering data logged by Herr Brunner and the Siemens technicians. Nylon threads cannot explain a self-contained, fuel-powered generator experiencing massive internal voltage spikes that perfectly sync with the destruction of heavy overhead light tubes. Nor does it explain how a mechanical utility meter down the street could log forty-six separate outbound calls across a single fifteen-minute window on a locked rotary phone.

Ultimately, the Rosenheim visitation remains a classic textbook study because it bridges the gap between raw folklore and hard physical data. It shows us that whatever the true nature of the poltergeist phenomenon turns out to be. It is a force that leaves a clear, measurable footprint on our modern technological world.

The Rosenheim Poltergeist Frequently Asked Questions

What was the Rosenheim Poltergeist case?

The Rosenheim Poltergeist case was a highly documented series of anomalous physical and electronic disruptions that occurred within a law office at 13 Königstrasse in Rosenheim, Germany, during the autumn of 1967. The phenomena included exploding light bulbs, automatic phones dialing numbers on their own, moving furniture, and severe voltage spikes that baffled engineers and scientists.

Who was the person responsible for the Rosenheim Poltergeist?

Investigations by local police and parapsychologist Professor Hans Bender identified an 18-year-old administrative clerk named Anne-Marie Schneider (later Schaberl) as the focal point, or "agent," of the activity. The phenomena occurred exclusively when she was present in the office and ceased entirely after her employment was terminated.

How did scientists explain the phone calls in the Rosenheim case?

Mechanical utility meters recorded hundreds of rapid outbound calls to the local speaking clock (0119). Engineers from Siemens and the Post Office verified that the calls originated from the office lines, yet the rapid timing (46 calls in 15 minutes) was physically impossible for a human to dial manually using the office's vintage rotary hardware.

What did Professor Hans Bender conclude about the Rosenheim case?

Professor Hans Bender of the Freiburg Institute concluded that Anne-Marie Schneider was unconsciously generating psychokinetic energy (PK). Her intense emotional frustration, acute boredom, and past psychological trauma acted as a catalyst, causing her subconscious mind to manipulate the physical environment around her.

Was the Rosenheim Poltergeist ever proven to be a hoax?

While skeptics suggest the events could have been accomplished via trickery, threads, or sleight-of-hand, no proof of fraud was ever discovered despite constant surveillance by undercover police officers. The case remains one of the most credible in history due to the corroborating data logged by electrical monitoring instruments.

How did the Rosenheim ghost make impossible phone calls?

Mechanical utility meters logged the office phone dialing the local speaking clock (Zeitansage) 46 times within 15 minutes. Because vintage rotary dial hardware required 17 seconds per cycle to physically spring back into place, manual human dialing was mathematically and physically impossible, leading engineers to conclude a raw, non-mechanical electrical current was bypassing the system.

Sources and Further Reading

• Bender, Hans. (1974). Modern Poltergeist Research: A Brief Overview of the Rosenheim Case. Journal of the Society for Psychical Research.

• Karger, F., & Zicha, G. (1968). Physikalische Untersuchungen des Rosenheimer Poltergeistfalles (Physical Investigations of the Rosenheim Poltergeist Case). Proceedings of the Freiburg Institute.

• Owen, A.R.G. (1970). The Rosenheim Phenomena: An Appraisal of the Electrical and Physical Evidence. Evaluation of Anomalous Physical Phenomena.