Poltergeist (Greywalker Series #2)

Harper Blaine was your average small-time PI until she died-for two minutes. Now she's a Greywalker-walking the thin line between the living world and the paranormal realm. And she's discovering that her new abilities are landing her all sorts of "strange" cases.

In the days leading up to Halloween, Harper's been hired by a university research group that is attempting to create an artificial poltergeist. The head researcher suspects someone is ...