I'll be honest -- I chose to read this book because I was interested in the time-hopping aspects of the story. I also liked the cover. Yes, I absolutely chose a book based on the cover design. I'm a visual person, so it's a factor! What I really liked about this book is the plot -- I enjoyed the mind-twisting bits related to time travel and how changing things in the past would affect the future (present time in some cases). I enjoyed Rysa Walker's writing style. She has a great talent for describing complex concepts and giving plenty of detail that I was able to play a movie of the book in my head while I read. This reason alone made it hard to put this book down! 
 The only thing that made me hesitate a few times when reading this book was (view spoiler)[the sexualization of the main character. I've been a 17 year old girl and so I know those thoughts well, but it was still a little jarring for me to read about a 17 year old's intimate thoughts. At times, I felt like I was reading the thoughts of an older character, not a 17 year old. I'm not saying 17 year olds can't be mature enough to have those thoughts. It was just a little weird to read the prose then remember the character thinking those things is technically a minor (according to U.S. law). It was just a tad weird, but I was able to push it to the back of my mind. 
 One thing I enjoyed about Walker's writing is her ability to make you feel what the character is feeling. There were some points (when Kate saw her dad in the "other" timeline, when Trey drove away the night before her jump, when Connor recounted part of his backstory...) that really hit me hard and I was super immersed in the story. So at times, this book was a little bit of an emotional roller coaster -- and that's great! I think it's good to have a book pull you in hard like that. (hide spoiler)] 
 I should probably admit that I've already got the second book downloaded to my Kindle. I haven't started reading it yet, because I need a little more time to recover from the emotional roller coaster I experienced a few times. But I will be reading the second book!