Watch full episodes of ghost adventures where Bagans, Groff, and Goodwin investigate reportedly haunted locations, hoping to collect visual or auditory evidence of paranormal activity. Each episode begins with the trio touring the investigation site with its owners or caretakers.These introductions typically include Bagan's voice-overs of the "dark" histories of the places and interviews with people who claim to have witnessed paranormal phenomena at the location. The crew places X's with black or gray tape at the sites of alleged activity and later returns to set static night-vision cameras on these "hotspots."
After completing the walkthrough, the three men plan their strategy and then are "locked down" into the location by themselves ("to prevent any kind of audio contamination") for an overnight ("from dusk until dawn") investigation. During the "lockdown", they use a variety of equipment, including digital thermometers, EMF meters, handheld digital video cameras, digital audio recorders,the Ovilus and infrared night-vision cameras in an effort to document evidence to support paranormal events. On some investigations, the members follow provocative techniques, such as using "trigger objects" and aggressive language, in an attempt to increase their chances of capturing such phenomena. At the end of some episodes, the investigators analyze their audio, photos, and video footage (often with the assistance of "paranormal experts") and present any unexplained phenomena that were captured.
Throughout the series, the crew claims to have captured and experienced various anomalous phenomena, some of which occurred almost simultaneously: equipment malfunctions, like battery drainage; EMF spikes, or fluctuations in electromagnetic fields; sudden changes in temperature (increase, decrease, or both); unexplained noises; electronic voice phenomena (EVPs); apparitions,shadow people, mists, and orbs; physical contact and harm; moving objects; spirit possessions; and other phenomena, like responses in an Ovilus and drainage of an EM Pump.
So far, the investigators believe to have experienced and filmed three apparent possessions. Bagans believes that he was possessed twice: first at the Preston School of Industry and second at Poveglia. Groff, who admitted that he had never believed in possessions, now claims that he was possessed once at the Moon River Brewing Company.