Zak and the crew rush to help a Nevada family who claim paranormal activity sent one parent to the hospital, and fear their young daughter is next. The team works urgently to uncover the dark source of the psychological attacks hiding inside the home.

The crew are in Downey, California, to investigate the shuttered Los Padrinos Juvenile Detention Center, given the ominous designation of the "Devil's Den" by both guards and inmates. In this terrifying two-hour special, the crew go behind the barbed wire to find out if the evil inside is not the real-life horrors of detention, but the devil itself.