From brief:

Natalie Chambers hasn’t been the same since the accident—and neither has her dead mother. Haunted by gruesome visions of the woman she killed, Natalie’s life is suspended in time by her grief and her family’s attempts to curb her self-destructive delusions.
When a cold autumn night brings her aunt Lindsay, the charismatic antiquities dealer, from Greece back to the small Virginia farm town where they were raised, a terrifying clash between myth and reality is set in motion. Lindsay gives Natalie a souvenir unearthed in an ancient city, unknowingly binding her to more than two millennia of history and its guardian.
Thrust into a dangerous search for answers across two continents, Natalie’s only chance for redemption is to confront her ghosts—past and present.