From 1992 to 2002 Christopher O'Brien investigated over one thousand paranormal events reported in the San Luis Valley—located in south-central Colorado/north-central New Mexico.
Working with law enforcement officials, ex-military, ranchers and an extensive network of skywatchers, he documented what may have been the most intense wave of unexplained activity ever seen in a single region of North America.
His ten-year investigation resulted in the three books of his “mysterious valley” trilogy: The Mysterious Valley, Enter the Valley, and Secrets of the Mysterious Valley.
His meticulous field investigation of UFO reports, unexplained livestock deaths, Native American legends, cryptozoology, secret military activity and the folklore, found in the world's largest alpine valley, has produced one of the largest databases of unusual occurrences gathered from a single geographic region. He is currently working with a team of specialists installing a high-tech video surveillance and hard-data monitoring system in and around the San Luis Valley.
His latest book Stalking the Tricksters is published by Adventures Unlimited Press. This controversial book distills his years of field investigation and research into an ingenious unified paranormal theory that is sure to create intense interest and controversy.