The Sins of the Past (The Ephraim Godwin Chronicles) by Eric Butler
Once an ancient race of supreme beings ruled over the earth. Banished by the light centuries ago, one has returned. With the help of its disciples, it desires to plunge the world into a new age of darkness and horror.
Ephraim Godwin is searching for the truth about his family's disappearance. After conventional ways failed, he turned to the world of spiritualism, only to discover it filled with charlatans and tricksters. As a known skeptic, Ephraim fights to shine a light on those who prey upon others as he searches for the truth.
As Ephraim attends another séance, he discovers not everyone is a fraud and is drawn deeper into the world of the supernatural. With the help of noted spiritualist Zona Whitlock and famed explorer Doctor Livingstone, he hopes to stop this evil from consuming the world.