The Half Blood Princess

Bluebell is an orphan. She lost her parents in a mysterious fire. She hopes to find love with Cory her new boyfriend after the tragedy.
But Cory is not all he seems. Handsome and caring he wants to take care of Bluebell and offers her a new life in America. Then one day when they were due to get married Cory introduces her to The Circle. The Circle are a group of mystics ,vampire hunters, warlocks, wizards, and witches who practice the black arts.
Cory Is their leader.
His sinister friends have their own agenda and Cory is challenged as leader.
Bluebell finds a diary that belongs to Cory.
It tells of the date of her birth and a life she never knew she had. A past life in a time and kingdom that belongs to another mystical world. Bluebell confronts Cory. Cory lies and tries to reassure Bluebell he truly loves her. But Bluebell is slowly developing paranormal powers. She can speak to the dead. She can move objects with the power of her mind and she is getting a hunger she wants to satisfy. Human blood.

Cory is a vampire hunter and Bluebell is a Half Blood vampire princess. Cory imprisons Bluebell and summons a warlock to keep guard over her in the dungeon of his house. Bluebell escapes and moves back to London where she feels safe but hungry and homeless she wants to find out about a certain man called Lorcan. She is taken into the home of an aristocratic family - the Snodgrass family. Lord Snodgrass feels pity for her begging on the streets of London. But Lord Snodgrass has his own sinister motives for helping Bluebell.
She learns that she has a sister just as Cory's diary states. She also learns that she has a powerful protector. Lorcan. A full blood vampire who will show her the destiny she and her sister have been born to. Cory vows to find Bluebell and when he does she will be his bride and he will gain strength from her powers and he will finally achieve immortality.