Here is the synopsis for the stand-alone Hunters of the Dark prequel, The Tomb:
18-year-old Rachel Thyme has been handed the opportunity of a lifetime when she joins an archaeological dig off the coast of Australia. Eager to have some experience under her belt, she doesn’t question the rumors the locals tell of the previous archaeology crews and the haunting disappearances. She ignores the first signs that something is wrong when her crewmates begin to do strange things, that propel them deeper into the bowels of Black Forest Island. But she can hardly write off discovery after discovery that lead her to a long-hidden tomb that screams of foreboding. Rachel wants nothing more than to prove herself on this excursion, especially as it was her daddy’s money that helped her land this job, and as she makes friends, and even sees a little romance, she discovers horrors she can hardly imagine, from evil slowly awakening around her, to the hidden demons locked in her past.
Coming in late June.