This was roller coaster of a book! The story begins with the mystery of a Jane Doe that comes into the main character's emergency room and eventually ICU. Figuring out who 'Jane' is and what happened to her is the overarching story. But along the way, as we find out more about her and doctor Charlotte's story, we find so many more things to question. A very cool multi-layered plot with a hefty dose of fascinating medical drama.