It's no easy task hunting ghosts, and sometimes even such experienced pros as Zak Bagans and his gang of fearless minions must enlist the help of people who really know about dealing with the miserable, suffering souls who continue to inhabit this mortal coil. Meaning abandonded buildings.
Enter the Hollywood Ghost Hunters, consisting of the guy who played Jason, the guy who played Leatherface and some stuntman. Those ghosts better watch out. With talent like this, they're going to get not only adventured to the max, but the crap hunted out of them.
You can tell these guys know what they're doing. They bring their own fog machine.
Which ghosts hate.