Paranormal investigator Zak Bagans documents the most authenticated case of possession in American history.

The Ghost Adventures crew visit the shuttered Los Padrinos Juvenile Detention Center, a facility given the ominous designation "Devil's Den", to investigate the presence of a lingering dark and disturbing energy that still resides inside the building.

The fearless four quarantine themselves for two weeks in Bagans' famed 'Haunted Museum' in Las Vegas, all by themselves.