I enjoyed the split perspectives and the morning and afternoon thing was cool when it was just Rachel riding on the train, but it started to get unnecessarily  confusing as the book progressed. Each female character was interesting and the choice to show the story through each of them was too. I find it very difficult to give a mystery a five star though. This book was good. The reveal was not incredibly surprising nor incredibly predictable. I think for a mystery to be really good, I need to fell like I am learning with the characters or shouting at them as I can see what’s happening. While I did neither, I would still recommend this book as a classic mystery with a twist on the perspectives.