Anna's Nightmare Series by Sarah Fleming Mountford

Physician Anna Roberts runs a free health clinic in Kansas City where she spends her days taking care of the living and avoiding the spirits of the dead. A late night accident leaves Anna at the mercy of the strange man who saved her life, but Anna soon learns that meeting Jed was no coincidence. As Anna is drawn into Jed's dangerous world and a feud three thousand years in the making, she must come to terms with her own secrets and decide what she will do, when they come calling.

Dying made me question everything I knew about living. A strange illness ravages the countryside while Dr. Anna Roberts struggles to recover from her own near-death experience. She’s falling in love with Jedediah, a three-thousand-year-old ghost, but his guarded alliance with a Council of ancient spirits frightens her. Can Jed’s allegiance be trusted? Haunted by her dreams and driven by her calling, Anna is torn between the worlds of the living and the dead... moreDying made me question everything I knew about living. A strange illness ravages the countryside while Dr. Anna Roberts struggles to recover from her own near-death experience. She’s falling in love with Jedediah, a three-thousand-year-old ghost, but his guarded alliance with a Council of ancient spirits frightens her. Can Jed’s allegiance be trusted? Haunted by her dreams and driven by her calling, Anna is torn between the worlds of the living and the dead. Is she a healer or an executioner? Will Anna be able to protect those she loves from her nightmares when they come true? (Anna’s Nightmare Book Two, sequel to When They Come Calling ) less

Racing against time to reunite her ghost’s soul with his body, Dr. Anna Roberts becomes further embroiled in a millennia-old feud. Confronted by powerful spirits, Anna is forced to intervene, using her paranormal powers against those who seek to destroy her. To the ever-gathering beings, the living are nothing, and so they will stop at nothing to complete their return. Who can Anna protect, when they come alive?