The claims

For eight years, crowds gathered on a hillside above Lake Bracciano where Gisella Cardia said a statuette of the Virgin wept blood and delivered monthly messages; court-commissioned genetic testing found the traces on the statue matched Cardia's own DNA, the bishop ruled constat de non supernaturalitate in March 2024 with Vatican confirmation in June, and the Cardias were ordered to stand trial for fraud — while Cardia, through her lawyer, maintains her innocence.

The mysterious oil reported to exude from religious objects in the Worcester, Massachusetts, room of comatose Audrey Santo was chemically analyzed in 1998 and identified as approximately 80% corn and soybean oil combined with animal fat — commercial cooking oil components, not an unknown substance.

Two major broadcast investigations — an HBO documentary in 2001 and repeated NBC Dateline reports — followed up on Benny Hinn's claimed miracle healings and found no medically verified cases among those tracked.

A hollow bronze Virgin Mary statue at Our Lady of Guadalupe parish in Hobbs, New Mexico, appeared to weep an olive-oil-like substance in 2018, prompting a formal Diocese investigation that confirmed the liquid was rose-scented olive oil.

Relics claimed to be the charred remains of Joan of Arc, held in a Chinon pharmacy bottle since 1867, were analyzed in 2009–2010 by a multidisciplinary forensic team and confirmed to be a mummified cat leg bone and a human rib dating to the 6th–3rd century BC — Egyptian mummy components, not Joan's remains.

A woman declared healed of spinal cancer at a Kuhlman service discarded her brace on stage, suffered spinal collapse the next day, and died four months later — the most-cited case in William Nolen MD's 1974 skeptical investigation.

Televangelist Peter Popoff was exposed using a concealed radio earpiece to receive congregants' personal details from his wife, then presenting this information as divine revelation during healing crusades.

Indian spiritual leader Sathya Sai Baba, who claimed to materialize objects from thin air as proof of divinity, was captured on multiple occasions apparently concealing and transferring objects using standard conjuring technique, and refused every request for controlled testing.

The 2006 Study of the Therapeutic Effects of Intercessory Prayer, the largest and best-controlled trial of its kind, found no statistically significant benefit from prayer for cardiac bypass patients and observed a slight increase in complications among patients who knew they were being prayed for.

On September 21, 1995, Hindu devotees worldwide reported that statues of Ganesha and other deities were drinking milk offered by spoon — a mass phenomenon that lasted roughly 24 hours before stopping as abruptly as it began.

In 1762, a supposed haunting at a lodging house on Cock Lane, London -- attributed to the spirit of a murdered woman -- was investigated by a committee including Samuel Johnson and exposed as a fraud perpetrated by a young girl and her father.

Photographs of fairies taken by two Yorkshire cousins in 1917, which convinced Arthur Conan Doyle and leading spiritualists of fairy existence, were confessed by both subjects in 1983 to be cardboard cutouts supported on hatpins.

In May 2001, New Delhi was gripped by hundreds of reported attacks by a supernatural monkey-like creature, resulting in documented injuries, two deaths from panic falls, and a landmark academic study of mass psychogenic illness.

Since the 1980s, pilgrims at Medjugorje, Bosnia have reported seeing the sun spin, dance, and emit colored light — a phenomenon producing documented cases of solar retinopathy and explained by ophthalmologists and physicists as the result of extended sun-gazing.

An Italian statue of the Virgin Mary reported to weep blood in 1995 was investigated by forensic scientists; the blood was typed as male, the statue's owner refused DNA testing, and a subsequent Italian trial established a church custodian had applied blood to a different statue using his own blood.

The 2008 Florida Healing Outpouring drew massive crowds and claimed dozens of healings and twenty resurrections from the dead, but ABC Nightline found not a single claim independently verifiable, and World magazine reported several 'healed' individuals had since died of their conditions.

Self-described psychic Uri Geller was unable to demonstrate any paranormal ability when James Randi advised The Tonight Show to use props Geller had no prior access to, producing an on-air failure that established his method required advance access to objects.

Faith healer W.V. Grant was exposed by James Randi for faking leg-lengthening healings and using prayer-card cold reading, then convicted by the IRS in 1996 for failing to report $375,000 in taxable income.