While this is a mystery book, it feels very untypical of the mystery genre. Sure, the book opens with a murder, and the secret that murder is protecting, but I found myself focusing much more on the characters than the mystery. I was really enchanted by Sophie as a character, and her desire to be, as she repeatedly states, flint. It is clear that she is protecting herself, and anticipates emotional trauma, despite the fact that she has a fairly happy life. I am also fascinated with the concept of motherhood that Sophie is tangling with. Her adopted mom died, and her biological mom is such a mystery, Sophie is left without maternal guidance, like a ship without a captain.
The story itself, in terms of mystery, seemed a tiny bit slow to me. The action was just not enough to draw me in, but luckily the characters more than made up for it. I cared more about Sophie's personal relationships that who was behind all the nefarious deeds. However, because I was less invested in the mystery, the revelation came as a big surprise to me, which I loved. I do feel like the story had good resolution, in every sense, and even despite my lack of connection to parts of the plot, I still consider this a good solid book.
The book will appeal to mystery fans, particularly female mystery fans, as well as fans of psychological thrillers.