Phillipa was adopted around the age of 8, but has no real memories of what her life was like before Maurice and Hilda adopted her. At 18, she requests the information about her birth parents, and is surprised to find that what little she's been told was not true.
To tell any more of the plot is to spoil the surprises for the reader--and Innocent Blood does contain excellent surprises and plot turns. It is not James' usual mystery, but rather a suspense novel. The reader is slowly given information and left to wonder just what will happen when the important characters finally meet.
As is true of all of James' novels, Innocent Blood is excellently written, with a gripping plot. Her ability to bring the reader into the life of her characters is amazing. The only thing keeping this from being a five star novel is that Phillipa, a spoiled and "entitled" young adult, is an annoying and unlikable (for me anyway) character.
Other than that, this is a well-crafted novel that will keep the reader engaged until the end.