Lisa Olsen - Angel of Mercy (The Fallen #1)

When Mercy wakes up in the hospital after a brutal stabbing, she has little recollection of the attack; only the blurred memories of a mysterious stranger with piercing blue eyes that haunts her dreams. After spotting the same man, that only she can see, Mercy follows him home, brazenly confronting him. (kids at home, never do that!) Her saviour turns out to be less than human, or is it more?

Samael is a fallen angel, bound to the Earth and living out his life among humans but apart from them. Unwilling to let an innocent die, Sam bestowed some of his Grace to Mercy, healing her wounds and imbuing her with some of his angelic powers. Thrust into a world within her own where angels and demons coexist unseen by mortals, Mercy must learn to accept the fact that she is no longer strictly human; she is something new. Complicating things is Adamiel, the reckless fallen angel who is Sam's enigmatic friend. Equal parts information and aggravation, Sam and Adam help Mercy acclimate to her new life. But now Mercy's eyes are opened to a whole new world beyond the human realm.