This book was not entirely successful for me. I thought the author wove her complex plot well, but I don't think she was as successful with her characterizations. In a story such as this one, where the author is trying to cast doubt as to whether a character is a hero or a villain, she has to make a plausible case for both sides. Unfortunately in this story, the author only plausibly makes a case for villainy. In fact, I consistently found myself rooting for the heroine to tell the man to get lost, and I never once trusted him or his motives. And even though the author tells us the heroine is falling for him, I never believed in the relationship. Even the sex scenes were emotion-less and clinical, like the characters were going for degree-of-difficulty points rather than making a loving connection with each other.
The heroine is not an entirely successful creation either. Too often, she's a ninny who trembles, weeps, and even barfs her way through her adventures. She's also the world's most insensitive sleuth. No matter that she was responsible for the death of her faux-fiance, she never lets his family's grief get in the way of her investigation. Barging into their homes, crashing their social events, ransacking their posessions, she's more like a stalker than the intrepid-heroine-on-a-quest-for-the-truth the author would like to portray. Overall, I give the author points for crafting an involving plot, but without emotion and believable characterization behind it, it was a hollow effort.