Researcher, Irish
Colm A. Kelleher
Irish biochemist and paranormal researcher who led investigations at Skinwalker Ranch and co-authored the landmark study of anomalous phenomena.
Background
Colm A. Kelleher is an Irish-born biochemist with a Ph.D. from Trinity College Dublin (1983) and a fifteen-year research career in cell and molecular biology. Before entering paranormal research, he worked at prestigious institutions including the Ontario Cancer Institute, the Terry Fox Cancer Research Laboratory, and the National Jewish Center for Immunology and Respiratory Medicine, conducting research on cancer and immunology.
NIDS and Paranormal Research
In the mid-1990s, Kelleher joined the National Institute for Discovery Science (NIDS), founded by Las Vegas businessman Robert Bigelow. As Deputy Director for eight years, Kelleher oversaw investigations using forensic science methodology to study anomalous phenomena. NIDS emphasized a rigorous, scientific approach rather than speculation: "We don't study aliens, we study anomalies. They're the same thing in a lot of people's minds, but not in our minds," Kelleher stated.
Skinwalker Ranch Investigation
Kelleher's most notable work involved investigating phenomena at Skinwalker Ranch in Uintah County, Utah—a location with over fifty years of reported paranormal activity. Between 1996 and 2004, Kelleher spent hundreds of days and nights on the property, documenting anomalies including vanishing and mutilated cattle, unidentified flying objects, creature sightings (some described as "huge otherworldly creatures"), invisible objects emitting magnetic fields, and flying orbs of light exhibiting "dazzling maneuverability."
Hunt for the Skinwalker
In 2005, Kelleher co-authored Hunt for the Skinwalker: Science Confronts the Unexplained at a Remote Ranch in Utah with award-winning journalist George Knapp. The book presented the NIDS investigation findings in unprecedented scientific detail and introduced the Skinwalker property to a global audience. The publication marked a watershed moment in bringing paranormal research to mainstream scientific discourse, reportedly influencing the creation of the U.S. government's largest official UAP program.
Scientific Approach
Kelleher's work exemplifies the application of rigorous scientific methodology to historically marginalized phenomena. Rather than seeking sensationalism, his investigations emphasized documentation, forensic analysis, and peer-reviewed reporting. His background in molecular biology lent credibility to NIDS's claim to study anomalies with the same rigor applied to hard sciences.
Notable claims
- Spent hundreds of nights documenting paranormal phenomena at Skinwalker Ranch, including UFO sightings, creature encounters, and animal mutilations
- Applied forensic science methodology to paranormal investigation, treating anomalies as legitimate scientific subjects
- Co-authored the definitive NIDS account of Skinwalker Ranch phenomena, introducing the site to mainstream scientific and public discourse
Key works
- Hunt for the Skinwalker: Science Confronts the Unexplained at a Remote Ranch in Utah (2005, co-authored with George Knapp) — comprehensive scientific investigation of paranormal phenomena at Skinwalker Ranch
- Research publications through NIDS investigating electromagnetic anomalies, biological effects of anomalous encounters, and cryptozoological reports
- Eight years of investigations at Skinwalker Ranch (1996–2004) under NIDS auspices
Watch
What a Covert U.S. Government UFO Program Discovered with Colm Kelleher
Researching the Paranormal with Colm Kelleher
The Next Steps in UFO Research with Colm Kelleher
Listening to Art Bell With Colm Kelleher | UFO Phenomena | 04.24.2004
Skinwalkers At The Pentagon | Colm A. Kelleher
Further reading
Hunt for the Skinwalker: Science Confronts the Unexplained at a Remote Ranch in Utah
Kelleher's own book
Buying through these links supports the library. We may earn a commission.
Also available

Hunt for the Skinwalker
Documentary investigation into paranormal phenomena at Skinwalker Ranch, based on the best-selling book by George Knapp and Dr. Colm Kelleher. Features interviews with eyewitnesses and previously unreleased scientific recordings from the most extensive study of a paranormal hotspot in human history.
Investigation Alien
Series. Netflix docuseries featuring investigative journalist George Knapp and Dr. Colm Kelleher investigating UFO incidents and paranormal phenomena. Six episodes examining animal mutilations, crop circles, and government UFO programs with never-before-seen evidence from 30 years of research.
The Secret of Skinwalker Ranch
Series. History Channel docuseries investigating paranormal phenomena at Skinwalker Ranch in Utah's Uinta Basin, where decades of secretive scientific research has documented UFO sightings, animal mutilations, and unexplained phenomena. Based on the scientific work of Dr. Colm Kelleher and the NIDS research program.

American Sasquatch: Man, Myth or Monster
Documentary investigation into the Bigfoot phenomenon led by Missing 411 author Dave Paulides and featuring Dr. Colm Kelleher. Uses quantum physics, DNA analysis, and expert testimony to challenge conventional understanding of the legendary creature.
Buying through these links supports the library. We may earn a commission.
Notes
- National Institute for Discovery Science, Wikipedia
- Hunt for the Skinwalker: Science Confronts the Unexplained at a Remote Ranch in Utah, Colm A. Kelleher and George Knapp, Amazon/Simon & Schuster
- Colm Kelleher Guest Bio, Coast to Coast AM
- Colm Kelleher, SourceWatch
Filed under
ProvenanceAgent indexedUpdated 2mo ago4 sources
Drafted by the archive's AI research agent from the sources below; corrections from readers are reviewed and folded in.
- First indexed
- 30 MAY 26 // 09:18Z
- Last updated
- 31 AUG 26 // 10:19Z
- National Institute for Discovery Science, Wikipedia
- Hunt for the Skinwalker: Science Confronts the Unexplained at a Remote Ranch in Utah, Colm A. Kelleher and George Knapp, Amazon/Simon & Schuster
- Colm Kelleher Guest Bio, Coast to Coast AM
- Colm Kelleher, SourceWatch