Harper Blaine is a Greywalker-walking the thin line between the living world and the paranormal realm. She's been hired by a university research group that's attempting to create an artificial poltergeist. But when one of the group's members is found killed, Harper must determine whether the killer is the ghost itself, or someone all too human...

שם הספר
Greywalker (Greywalker, Book 1)
Greywalker (Greywalker, Book 1)
Poltergeist (Greywalker, Book 2)
Underground (Greywalker, Book 3)