Compelling but flawed. The writing style, with frequent shifts between time periods, took some getting used to, but was an interesting format. The story ended pretty abruptly.
The period aspect was occasionally clumsy. Like the mention of a woman whose 3 children are left with damaged shoes and ill fitting clothes as she leaves $5 in the church collection bowl every single week. That's $43.54 a week in modern dollars. This isn't generosity, it's child neglect. It leaves me wondering if the author forgot about inflation, simply didn't take the second to google the conversion, or thinks that putting your church above your children's health is a good thing. Other reviewers have pointed out linguistic anachronisms.
Then there's Damien, he was supposed to be sympathetic, even redeemed by the end. But he was never a decent person, he was an unethical slimeball from the start, spying on two women for a letter of recommendation, and fucking both of them while he was still spying on them. Since they would not have had sex with him had they known the truth, and he entered their lives under false pretenses, this is rape by deception. It's also just an asshole move to have sex with one sister, and then go have sex with the other without either of them being aware. He may not have known Kaiser was outright evil, but he did know Kaiser was scary and willing to resort to extremely unethical tactics. Damien should definitely have had to pay for what he did. Feeling bad is not redemption.
Ruth was another character who got away with her evil behavior. Her actions are excused with a "she had her reasons", but her reasons were selfish, and what she did was absolutely monstrous. She drugged an innocent woman and had her institutionalized, depriving her children of their mother, and her husband (Ruth's own son) of his wife, and dooming her to be tortured. It was all extremely premeditated. She wanted to get rid of Sophie from the first day she met her at 13 years old.
Jude and Hattie were interesting, but they ought to have been a lot more fleshed out. As it was they were kind of one-dimensional (the angelic, flighty psychic waif and the promiscuous, independent modern woman).
A lot of things happened just because characters spontaneously decided to act like absolute morons with the shoddiest of justification. Jude leaving her gun in the car, Damien blurting out not one, but two important secrets, Hattie going to the asylum on her own and then going with Kaiser despite being psychic and knowing full-well how evil he was.
Since the next books will have different characters I have some hope they'll be better.