Ghost Adventures started as an independent documentary in 2004 by Zak Bagans, Aaron Goodwin, and Nick Groff. The show was later picked up by the Sci-Fi Channel, and now is on the Travel Channel. The show was developed after Bagans, who was never a believer in the paranormal, set out to catch spirits on video after he had an experience with the spirit of a woman who was suicidal.
The premise of the show is to travel to different places that are reportedly haunted. They are usually invited by people who have had experiences that are unexplained, or the locations are those which have been reportedly haunted for centuries. They have traveled all over the United States, as well as Italy and England.
In order to find spirits, the crew sets up videos and other equipment to conduct their investigations after having a meeting with the owner of the property, or a worker there who has seen paranormal activity. The equipment they use is supposed to be highly sensitive to spirits, such as EMF meters, which monitor the electromagnetic field in a particular area, thermometers to get digital readings on the temperature fluctuations, recording devices, including video cameras, digital cameras, and night vision cameras. After the equipment is set up, the cast is locked into the dwelling. They try to provoke spirits by taunting them while recording their results. Upon completion of their investigation, they review the results to the people who invited them to investigate, along with the television audience. They have found some interesting activity, and even claim to have stumbled upon three demonic possessions.
The show is interesting to watch, but do know that there have been instances where the activity has been questioned, such as a time when Zak says his handheld device was violently knocked out of his hand by a spirit, but playback of the video shows that he tossed it. It can be interesting to watch just to see how modern day ghost busters conduct their investigations, and the historical sites that they visit are also interesting because the history of the location is always divulged in-depth in the beginning of the program.