Neil Marshall (Dog Soldiers, Doomsday, Hellboy) knows how to make a horror film.  The writer/director is responsible for the early 2000’s cult classic The Descent, a film that has been praised for its mature characterization of a group of women (a relatively novel concept, as far as early ’00s horror was concerned).  In addition to its dramatic and psychological elements, The Descent was also freaking terrifying.  Even the toughest, most hardened horror fans are quick to admit…