10 Real Cases of Demonic Possession

10 Real Cases of Demonic Possession: Stories That Defy Explanation 👿🔮 #

Demonic possession is one of the oldest and most universal phenomena in human experience. It appears in the Bible, in Sumerian texts, in Buddhist rituals, in indigenous traditions, and in Vatican protocols that are updated to this day. Whether or not supernatural entities are involved, the symptoms are real and frequently documented by doctors, psychiatrists, and investigators.

The Catholic Church maintains an extraordinarily rigorous protocol for authorizing exorcisms. Before any ritual, the person must undergo a complete medical and psychiatric evaluation. Epilepsy, schizophrenia, dissociative identity disorder, Tourette syndrome, and other conditions must be ruled out first. Even so, the Church reports that thousands of cases per year pass through all medical filters and present phenomena that the involved doctors cannot explain.

These are the 10 best-documented cases in history.

1. 🇩🇪 Anneliese Michel — The Exorcism of Emily Rose (1975-1976) #

The most documented case of demonic possession in the modern era occurred in Klingenberg, Bavaria, Germany. Anneliese Michel was a devout Catholic young woman and university student who, starting at age 16, began experiencing strange episodes.

The Progression #

Initially, doctors diagnosed temporal lobe epilepsy — a real neurological condition that can cause hallucinations, personality changes, and seizures. Anneliese received anticonvulsant treatment for years, with no significant improvement.

In 1975, the symptoms escalated dramatically:

• She developed a violent aversion to religious objects — she couldn't look at crucifixes, be near holy water, or enter churches
• She began speaking in different voices (masculine, ancient, guttural)
• She demonstrated knowledge of facts she had no way of knowing
• She refused food for weeks — her weight dropped below 30 kg
• She displayed inexplicable physical strength — a 50 kg woman resisting several men

The Recordings #

After authorization from the local bishop, two priests conducted 67 exorcism sessions over 10 months. The sessions were audio recorded — and those recordings exist to this day. In them, voices distinct from Anneliese's can be heard, conversations in Latin and archaic German, and screams that audio specialists consider difficult for a single person to reproduce.

Anneliese died on July 1, 1976, at age 23. The official cause of death was malnutrition and dehydration. The two priests and her parents were tried and convicted of negligence resulting in death.

Legacy: The case inspired the film "The Exorcism of Emily Rose" (2005) and generated worldwide debate about the boundaries between religion, medicine, and patient rights. The Church revised its exorcism protocols partly because of this case.

2. 🇺🇸 Roland Doe — The Inspiration for "The Exorcist" (1949) #

The most famous case in American history began in Cottage City, Maryland, when a 14-year-old boy (identity protected under the pseudonym "Roland Doe" or "Robbie Mannheim") began experiencing strange phenomena after using a Ouija board with an aunt who had recently passed away.

What Was Documented #

The phenomena were witnessed by multiple people, including Jesuit priests, doctors, and family members:

• Objects moving on their own — chairs sliding across the floor, bed shaking violently
• Scratches and words appearing on the boy's skin — including the words "HELL" and "EVIL"
• Projectile vomiting at unusual distances
• The boy speaking in Latin (without any education in the language)
• Disproportionate strength — resisting several adults holding him down

The Exorcism #

Jesuit priests performed the exorcism over several weeks in St. Louis, Missouri. Father William Bowdern kept a detailed 26-page diary documenting each session — this diary constitutes one of the most complete primary sources of a possession case.

According to the records, the "moment of liberation" occurred when Roland said he had a vision of Saint Michael the Archangel defeating the demon. After that, all phenomena ceased permanently.

Legacy: Writer William Peter Blatty became fascinated with the case while studying at Georgetown University. He wrote the novel "The Exorcist" (1971), which became the most terrifying film in cinema history.

3. 🇿🇦 Clara Germana Cele — The Nun Who Levitated (1906) #

At the Catholic mission of Umzinto, South Africa, a 16-year-old girl named Clara Germana Cele confessed to having made a "pact with the Devil." What followed was witnessed by more than 170 people.

Phenomena Witnessed (170+ witnesses) #

• Levitation up to 1.5 meters off the ground — witnessed by nuns, doctors, and local authorities simultaneously
• Xenoglossia: Clara spoke fluently in languages never learned — German, Polish, and French, plus unidentified languages
• She revealed intimate secrets of people she had never met — including sins confessed only in the confessional
• She demonstrated strength to knock down several adult men simultaneously
• Violent reaction to hidden sacred objects — even when she didn't know they were present

The exorcism lasted two days and was considered successful. Clara returned to normal life and lived without recurrence of the phenomena.

Notable: This case is particularly significant because of the number of witnesses (170+) and the variety of their backgrounds (religious, medical, ordinary citizens).

4. 🇬🇧 Michael Taylor — The Ossett Case (1974) #

One of the most tragic cases in exorcism history occurred in Ossett, Yorkshire, England. Michael Taylor, 31, began displaying disturbing behavior after attending meetings of a charismatic religious group.

The 8-Hour Exorcism #

A group of Anglican clergy performed an exorcism that lasted all night — approximately 8 hours. During the session, the priests claimed to have expelled 40 demons, including entities of insanity, violence, and murder.

However, they admitted that at least three entities remained — including that of "murder." They told Michael to go home and "have faith."

The Devastating Outcome #

A few hours after returning home, Michael committed a brutally violent crime against his wife Christine. He was found wandering the streets, covered in blood, with no memory of what he had done.

At trial, he was declared "not guilty by reason of insanity" and committed to a psychiatric institution. The case generated a national debate about the Church's responsibility in exorcism cases and about the dangers of treating psychiatric conditions with religious rituals.

5. 🇺🇸 Arne Cheyenne Johnson — "The Devil Made Me Do It" (1981) #

In 1981, Arne Cheyenne Johnson became the first person in US history to use demonic possession as a legal defense in a murder trial. The case became known worldwide as "The Devil's Trial."

The Chain of Events #

It all began when Arne's stepson, David Glatzel (11 years old), began showing classic signs of possession after the family moved to a new house. Ed and Lorraine Warren (the famous paranormal investigators who inspired "The Conjuring" franchise) were called in.

During an exorcism session with David, Arne allegedly challenged the demon to leave the child and possess him instead. According to witnesses, this happened — David improved and Arne began to change behavior.

Four months later, Arne stabbed and killed his landlord Alan Bono during an argument. Arne claimed not to remember the crime and not to have had control over his actions.

The Trial #

The judge rejected the demonic possession defense, declaring it inadmissible as a legal argument. Arne was sentenced to 10-20 years in prison, serving 5 before being released for good behavior.

Legacy: The case inspired the film "The Conjuring 3: The Devil Made Me Do It" (2021) and remains the only case in the US where possession was formally presented as a criminal defense.

6. 🇺🇸 "Julia" — The Case Studied by Psychiatrists (2008) #

In 2008, Dr. Richard E. Gallagher — a psychiatrist trained at Princeton and Columbia, professor at New York Medical College — published a study about a patient he called "Julia." The case is extraordinarily significant because it was investigated by a skeptical scientist with impeccable credentials.

Scientific Observations #

Dr. Gallagher documented phenomena he could not explain by any psychiatric diagnosis:

• Julia spoke in Latin and archaic Spanish — languages she demonstrably did not know
• She revealed private personal information about medical team members — including details she had no way of knowing
• Objects moved during evaluation sessions — witnessed by the medical team
• Julia demonstrated xenoglossia (speaking in unknown languages) verified by linguists

In 2016, Gallagher published an article in the Washington Post arguing that, while most "possession" cases have psychiatric explanations, a minority presents phenomena that current science cannot explain. His position is notable precisely because it comes from a scientist, not a religious figure.

7. 🇺🇸 Lurancy Vennum — The Watseka Case (1877) #

In Watseka, Illinois, a 13-year-old girl named Lurancy Vennum entered a trance and claimed that the spirit of Mary Roff — a young woman who had died 12 years earlier — had taken over her body.

The Disturbing Evidence #

What makes this case special is the amount of cross-verification:

• Lurancy recognized family members and friends of Mary Roff — people Lurancy had never met
• She knew where Mary had stored personal objects, describing correct locations
• She behaved exactly like Mary — mannerisms, expressions, preferences
• She called Mary's family "my family" and referred to her own parents as strangers
• She recognized one of Mary's hair ribbons and said where and when she last wore it

The phenomenon lasted 14 weeks before gradually dissipating. Lurancy returned to her normal personality with no memory of the period. The case was extensively documented by Dr. E. Winchester Stevens and published in medical journals of the era.

8. 🇬🇧 George Lukins — The Public Exorcism (1778) #

In Yatton, Somerset, England, George Lukins underwent a public exorcism in a church that attracted hundreds of spectators. Lukins claimed to be possessed by seven demons and had suffered episodes for 18 years.

The Documented Ritual #

Seven clergy performed the exorcism simultaneously — each designated to expel a specific demon. Witnesses reported:

• Lukins sang in completely different voices — ranging from female soprano to deep bass
• He uttered blasphemies in Latin — a language he never studied (he was a semi-literate tailor)
• He suffered convulsions so violent that several men could barely hold him
• After the ritual, he experienced an "instant cure" — he stood up calm and said he was free

The case generated extensive debate in the English press of the time, with skeptics attributing the phenomena to epilepsy and hysteria.

9. 🇺🇸 Anna Ecklund — The Longest Exorcism (1912-1928) #

The case of Anna Ecklund is considered one of the best documented in American history, partly because the priest who performed the final exorcism — Father Theophilus Riesinger — wrote a detailed account published with ecclesiastical approval.

Decades of Torment #

Anna began showing symptoms of "possession" at age 14. The first exorcism (1912) seemed to work, but symptoms returned with increasing intensity over the following years.

The final exorcism, performed in 1928 at a convent in Earling, Iowa, lasted 23 days. The convent nuns documented:

• Anna levitated — her body rose from the bed and was found pressed against the wall or ceiling
• She vomited impossible volumes of material, including objects she had not ingested
• She spoke in unknown languages
• She knew information she had no way of knowing — including sins of people present

Father Riesinger stated that Anna identified the "demons" by name — including Judas Iscariot and Beelzebub — and that each expulsion was followed by violent physical manifestations.

10. 🇧🇷 Brazilian Cases — Umbanda, Candomblé, and Catholicism #

Brazil has a unique relationship with spiritual possession. In umbanda and candomblé, the "incorporation" of spiritual entities is a central part of religious practice — it's not seen as pathological, but as sacred.

The Cultural Difference #

In Afro-Brazilian tradition, mediums "receive" orixás, caboclos, pretos-velhos, and other entities during rituals. The person changes voice, behavior, gestures, and personality — phenomena identical to those described in Catholic "possessions."

In Brazilian Catholicism, exorcist priests report hundreds of cases per year. Father Duarte Lara, one of Brazil's best-known exorcists, documented more than 3,000 cases over decades.

Catholic Charismatic Renewal: Communities like Canção Nova hold "liberation sessions" that attract thousands. Participants report physical manifestations: convulsions, involuntary screaming, falls ("resting in the Spirit"), and glossolalia (speaking in tongues).

The coexistence of these traditions in Brazil raises questions: if the symptoms are identical in completely different cultural contexts, is the phenomenon spiritual or psychological? Does culture determine how the brain "manifests" certain altered states of consciousness?

🔬 What Does Science Say? #

Known Medical Explanations #

However... #

Dr. Gallagher and other psychiatrists point out that some phenomena don't fit any diagnosis:

• Verified xenoglossia (fluently speaking unknown languages) — no psychiatric condition produces this
• Verifiable knowledge of impossible information — beyond "cold reading"
• Telekinesis (objects moving) — if genuine, inexplicable by any diagnosis

The dominant scientific position is that most cases have medical explanations, but a minority remains genuinely unexplained.

Conclusion: On the Border Between Science and Faith #

Whatever your position — skeptical, religious, or open — these cases share something undeniable: the symptoms are real. People suffer. Families are devastated. And in 2026, with all available neuroscience, we still don't have a satisfactory explanation for all documented phenomena.

The most skeptical will say that science will eventually explain everything. The most devout will say there is more between heaven and earth than our philosophy supposes. And the most honest will say: we don't know.

Frequently Asked Questions #

Are demonic possessions real?
From a scientific perspective, cases attributed to demonic possession are better explained by medical and psychological conditions: epilepsy, schizophrenia, dissociative identity disorder, Tourette syndrome, and autoimmune encephalitis. The Catholic Church requires ruling out all medical explanations before approving an exorcism. However, the Church maintains that genuine possessions occur, and the Vatican trains exorcists annually. The debate between spiritual and medical explanations continues.

How many exorcisms are performed each year?
The exact number is unknown, but estimates suggest hundreds of thousands worldwide. The Catholic Church has seen a dramatic increase in exorcism requests — Italy alone has about 500,000 requests per year. The Vatican opened an exorcism training course in 2005 that now trains hundreds of priests annually. Other religions also practice exorcism: Islam (ruqyah), Judaism, Hinduism, and various Protestant denominations. The rise in requests is attributed to increased media coverage and cultural factors.

What was the most famous case of alleged possession?
The case of Roland Doe (pseudonym) in 1949 inspired the novel and film The Exorcist. A 14-year-old boy in Maryland allegedly exhibited levitation, speaking in languages he didn't know, and superhuman strength. The Catholic Church performed over 30 exorcism sessions. Skeptics note that the original diary entries describe far less dramatic events than later accounts. Other famous cases include Anneliese Michel (Germany, 1976), whose death during exorcism led to criminal charges against the priests.

Can exorcisms be dangerous?
Yes, exorcisms have resulted in deaths. Anneliese Michel died of malnutrition and dehydration during a year of exorcisms in Germany (1976). A 5-year-old girl died during an exorcism in Milwaukee in 2003. Multiple deaths have been reported in various countries from physical restraint, starvation, and denial of medical care during exorcism rituals. The Catholic Church's official protocol prohibits physical harm, but unauthorized exorcisms by untrained individuals pose serious risks.

Sources: Gallagher, R.E. "Among the Afflicted" (Washington Post, 2016) | Allen, T.B. "Possessed: The True Story of an Exorcism" | Roman Ritual (De Exorcismis et Supplicationibus Quibusdam, Vatican, 1999/2004) | BBC News, Associated Press. Updated February 2026.

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