A descent into terror.Legends tell of a hollow earth, a world beneath our own. A world filled with wonders... and danger. But what if the legends are true?Delve into dark worlds in HELLHOLE, where death lurks around every corner, and come face to face with creatures from your worst nightmares in this collection of dark thrillers. New York Times bestselling author Jonathan Maberry and Bram Stoker Award winner Rena Mason headline a cast of bestselling and award-winning authors.