I usually like this author's books, but this one just didn't grab me. It started with all the characters randomly and continually referencing mythology, which seemed fairly pointless. Perhaps that was a common conversational habit in the time period? But the biggest problem was the characters keeping things from the reader for no good reason--referencing some big secret that the character is obviously thinking about, but not saying what it is. I suppose the theory was to build suspense, but, combined with the mythology, it just increased my boredom and made me not care once I did find out the secret.
Possibly because I didn't bond with the characters early on, their combined altruism got on my last nerve. But the main suspense plot--what happened to the heroine's cousin--did hold my interest, and while I was dissatisfied with the ultimate resolution, I did enjoy the unfolding of the clues in the case.
This is, I believe, a part of a trilogy or series, but I'm not going to go out of my way to find the others.