House of Darkness — J.M. Cagle

When Valerie Thompson sees yet another supernatural figure in the window of a local haunted house, a string of events follows. Though she may not know it yet, her impending actions are destined to set in motion a long-forgotten force of the afterlife, destroying lives and changing the superstitions of many residents in their community.
Valerie and her best friend, Jennifer, begin their night believing they can face their fears with a midnight ghost-hunting adventure in the haunted house, and they certainly aren't opposed to meeting some guys at this infamous location for parties. However, the people they meet change their lives forever, both for the better and the worse as the girls begin a supernatural war that will span their entire community, ruin reputations, take lives, and bring them to the brink of disaster again and again.
Graffiti and pentagrams on the walls aren't enough to stop the girls, though, and they pursue the otherworldly spirit that Valerie witnessed against all odds, while still taking time for a romantic rendezvous with the men they meet in the haunted house. Only time will tell if they are making their gravest mistakes in this climactic ghost-hunt that will reveal much more than any simple spirit.

*Book 2*
http://www.amazon.com/dp/B00H7XAD14/
*Book 3*
http://www.amazon.com/dp/B00H866K30/