Madison is dead. That's the only thing she knows for sure. What she doesn't know is how she got that way. And she'd like to know.
In the near distance she sees a light. As she gets closer, she sees an image of a bracelet she lost when she was younger. When she touches the image, she gets taken back to the memory of what happened when she lost it. Even more strange, she can enter her body at that time and try to alter that specific event. Each time she does that, she can't remember the details of the original memory, just the altered one. Pretty soon, she's trying every object she can find to see moments from her life which all ultimately lead to the scene where she lost her life.
Some memories shouldn't be altered though. And others can't change.
I liked this book for the overall concept and story. Madison loses a lot of objects during her lifetime, even though she's only 17, so there are many memories for her to follow. The switching from the past to the present jars a little, but it gets better as the story goes on. While the ending was a little surprising, Madison's feelings are not.