Real rating 3.5 stars. Kat Richardson is hitting her stride as a writer, and I found I enjoyed this book more than her last book. Harper is a PI hired to find someone "undermining" a scientific experiment on creating a ghost. The psychologist hiring her doesn't know that Harper can actually see into the world of the paranormal. There's an interesting cast of side characters, from the college professor and witch who help her with her skills, to her mysterious friend Quinton to Phoebe, bookstore owner. The mystery underneath drives the story and kept me guessing. Although I enjoy urban fantasy, the ghost/paranormal is not my favorite area of interest, but I just skimmed some of the longer explanations of the paranormal world. The resolution was satisfying without being expected or entirely satisfactory for the heroine. Although Harper is new to the paranormal, she is trying to learn and understand more of how it works. I'll be looking for the next installment.