First of all, after reading the reviews I am so glad I never read the blurbs on the back cover of books. That being said, I will say I did guess the so-called "twist" about a third of the way into the book. I really liked the different POVs and even though I was pretty sure what the twist was, having the different POVs of the twins kind of had me second guessing what was going on. I thought it was interesting that the other POV was from their psychiatrist and it added an extra layer to the story. I do say I was surprised by the ending. I wish there could've been a little more "substance" to the story, but the short chapters had me flying through the book and I read it in two days. And can we talk about that cover?! I think the cover alone will draw readers to want to read it. In conclusion, I recommend that you don't read the blurb on the back of the book because I really do think it gives too much away. A very solid debut!