I enjoyed the development of the lives of the two main female characters, Cat and Camilla. Their relationship reminded me of that of the two sisters in Sister of Mine by Sabra Waldfogel, although Camilla remains unnecessarily spiteful towards her adoptive sister until later in the story.
The unpleasant trope in American slavery historical fiction narratives of the mixed race female character being the sexually desirable one and the white woman being less attractive or retaining her purity is played out in this story. Thomas's unchanging feelings for Cat also feel increasingly unrealistic as the narrative develops.
I also felt that the side story about Andy and his wife trying to make their marriage work was a little tiring and not needed given the number of bigger storylines alongside the main one of him trying to get Ms Penbrook's story. As a historical fiction story, the author tried to get too many different contextual topics into the narrative and at times this created an overwhelming feel. For example, the terror of the KKK, passing as white, sexual abuse, consensual relationships between slave and whites etc. Shaw is a lovely character but felt very undeveloped and there purely to direct Cat's decisions. The outcome of Cat's eldest son felt really rushed and unexplained. He was certainly a product of the environment he was raised in, and his sudden u-turn made no sense, particularly given the control white men had to be with any slave woman they owned along with their 'legitimate' wife.
Overall, I enjoyed the book but it would have been better if it focused more closely on fewer historical topics and deepened the issues of racial 'passing' and embracing one's real identity.