http://www.graphicaudio.net/p-41-14-dark-carnival.aspx
Summary From Graphic Audio:
Out of the ashes of global destruction, Ryan Cawdor and his roving band of warrior survivalists continue their grim odyssey across a nuke-ravaged America, searching for a sanctuary and the promise of a better life.
Emerging from a Gateway into Florida's sultry heat, they enter the domain of a wealthy baron—a technical genius whose seat of power is a rebuilt theme park where the rides are fast and thrill seekers are guaranteed the time of their lives...if they can get out alive.
Influencing the baron is a ruthless and hypnotic cult leader and his demonic "family," whose murderous games trap Ryan into a midnight killing spree...with only one way out.
In the Deathlands, the future is a dream. Reality is a nightmare.