Racheal Leah Dawes is a girl just trying to make it through the day. She lost her father years ago and she has not been alright since. Her mother has not been able to deal with the death of her husband or Rachel's twin brother who was stillborn. Rachel works in a safe job (library) and does things like checks locks lots of times, goes the same way to work, does not go out on the weekend, does not take chances. She may go out occasionally with the only person she trusts - her best friend Lacey. But she mostly feels unsafe in the world.
From the time she was little, she always felt like there was someone watching her. A guardian angel if you will. In fact she knows she has seen him. He has shown up when Rachel was in trouble a few times but no one ever could seem to identify him. They just knew someone saved her. This man is following her again and his is present to her strongly. She decided to go see a therapist who assures her this is normal and a coping mechanism to deal with the loss of her dad. But one day she feels he is walking behind her and turns to confront him and that is where her crazy journey begins.
Enter Eaden. He is an immortal. He is not a warewolf or a vampire, he is just someone who cannot die. He has been around since the days of King Arthur. And he is drawn to Rachel because of a certain trait she has. Eaden had been on earth long enough and wants to die. He has been protecting Rachel because she is his Mafteach or key to a final death. Immortals, the longer they live, tend to start to go crazy. Eaden has had enough and it is time to die. But he has watched over Rachel for so long, since she was a baby, that he cannot bring himself to use her as his key or Mafteach. Not to mention when Rachel turns to talk to him that fateful day, there is a connection. And as their relationship grows, he falls in love with her. And she with him.
The problem is this. There was never a female Mafteach before in the history of mortals so Rachel is genetic abnormality. And she turns out to be not only Eaden's key, but the key for many other immortals. So it is Eaden's job to keep her safe because there are people like Amun and Sabas who wish to use her for his own selfish purposes. Rachel holds the key to a world of mortals and immortals and the whole balance between them.
Since she has this genetic abnormality and can bring about big changes in the immortal world,as well as the mortal world. But they are not necessarily all good. Eaden is very protective of Rachel and their adventure starts as they set out to go before The Counsel to explain why Rachel should stay alive and not be used for what they are intending to use her for.
The have help from another immortal Amerlyn who turns out to be a famous character is history. And they are helped on their mission also by some of the Sisters of Caillech, mainly Elora, Mara, and Sita. They have powers that can help Rachel and Eaden on their way to the Counsel.
This was a great fantasy with some mystery and a great love story. It shows just how far someone will go to be with who they love and what they will sacrifice for someone they love. And it is on Rachel's and Eaden's side that the love and the self-sacrifice exists.
If you want to read a good book and go on a great journey with a love that transcends time, this is the book for you.