This book was not exactly what I expected but really it was exactly what I should have expected. The narrator, Evelyn, was hard to connect to as she is a bit cold, thoughtless, and harsh. Unbelievably so she’s also set up to be the one in the right. Evelyn and her husband have separated. A little different than the typical path, Evelyn discovered he was having an affair...with a clone of her that he made using her research. The layers of betrayal in these were deep and the reader doesn’t get to see enough of Nathan or his motivations to think any better of him. This should have been the end of the story but Martine, Evelyn’s clone, reached out to Evelyn. First to meet and ask questions about impossible things that are in fact still happening, and later when Martine doesn’t know where else to turn. Unlike most thrillers I found myself not knowing where everything was going and being ultimately ok with that. It wasn’t full of too much science but I wasn’t really invested in any of the characters so I didn’t really care where they ended up. The writing style and story line reminded me of an episode of Black Mirror.