The storyline for this book has been well thought through and is different from what I was expecting. It took me a while to get into the main characters, other than Ida, who is a victim, and the most interesting and has depth of character. What I didn't expect and didn't like was the graphic detailed description of the murders. I would say the book should be described as horror, rather than psychological thriller. Which is why I've only given 3 stars.
The story has promise, but told in a disjointed manner. The wisp appears and is given enough body to tease, but is then gone and you have to traipse through the barren wastelands of simplistic prose to find the next wisp. A good storyline concept - some more flesh on the bones would make it worth chasing.