Cate Murphy is one of my favourite author's. This is book 5 in her Walker Papers series.
The stories revolve around Joanne Walker, a Seattle police detective and reluctant, but powerful, shaman. Walker finds herself battling the forces of evil in the Seattle area as she attempts to do her job as a cop and protect people. Not that she goes looking for bad things, mostly they find her and she'd rather they left her alone. But her shamanic abilities are strong, if untrained, and it's like a beacon for things that go bump in the night.
The books are well-written. Murphy is big on detail and she never loses the aim of the story. There's no unnecessary detours or characters that appear for a few chapters and then suddenly disappear without explanation. It's hard to keep a series going and keep it interesting, especially when you need to come up with a new 'baddie' in every book, but Murphy succeeds.
