The Arcadian returns to the dark ice in a reprisal of one of his first and most deadly missions. But this time the stakes couldn't be higher.

Massive sinkholes are opening across the country--each larger and deeper than the previous one. First the family pets go missing, and anyone living near one of the pits is reporting strange phenomena--the vibrations, sulphurous odours and strange sounds rising up from the stygian depths. Then come the reports of horrifying things' rising from the darkness. When the people start disappearing the government is forced to act. A team is sent in to explore...

"Alex Hunter, code named Arcadian, wakes up with no knowledge of who he is, in the care of a woman he doesn't recognise, in a country not his own. But there is a calling deep within him, to return home to Black Mountain. Formed a billion years ago, the Appalachian's Black Mountain hosts a terrible legend. Only one elder remains to guard its long-forgotten, deadly secret and there is a fear that there is evil lurking again. Some hikers have gone missing,...