Uncertainty (Gravity #2)

Last year, Ariel Donovan's life was shattered. She lost a friend, a love, and her sight into the afterlife. She's only beginning to move on, facing a summer without school as a distraction. Then she dreams of the mysterious Dexter Orphanage again, the place where all the trouble began. She decides to follow through on her dream, and her discovery turns her life upside down, for the second time.

With the unlikely return of an old ally, Ariel begins to unravel the web of deception in the small town of Hell. She learns that her grandmother may have seen what she saw, and finally discovers the trail to the truth about what happened to her best friend Jenna. When Henry Rhodes comes back into her life unexpectedly, she realizes that she just might need his help to stay sane. Because the ghosts are real.