ONCE UPON A TIME THERE WERE SEVEN GOOD FRIENDS…and they called themselves the Underground. For Justin, Mia, Josh, Caroline, Amy, Seth, and Simon life was nothing but drugs and music and fun…until high school was over and it was time for one final party before moving on.

Creepy, abandoned, isolated Custis Manor seemed like the perfect place for their blowout. But something watched their festivities…something corrupt and voracious.

Neither fully living nor truly dead, it had spent 200 years cultivating its terrible powers…waiting for victims to play with.

On that terrifying night, seven young lives were shattered forever.

Now, twenty years later, the survivors must return to Custis Manor to confront the demons of their past, to do battle with a nightmare beyond their comprehension…and a hideous peril more dreadful than death.

A truly unique thriller—gory and intense, satisfying and original—Underground is a startling vision of a nightmare dimension by one of the masters of the genre.