I’m not a big horror fan, but this was more fun than I thought it would be and I really enjoyed it! Using eugenics as the base of the horror was so interesting.
I wish there had been more tension between the two love interests, or that the romance wasn’t created there. She has so much chemistry, though toxic and abusive, with the brother, that the lack of spark made them feel like just  very good friends who survived a traumatic experience together.
Some of the language and phrases also felt too modern for the time period, which otherwise was very engrossing, but it didn’t take away from the readability too much.