In an effort to hurt his brother , Radu turns Mara and Lillian into vampires .
To gain control over the Bloodstone , a relic that is said to drip the blood of the saints , Radu kills his father .
In an effort to hurt Radu 's brother , Radu turns Mara and Lillian into vampires .
To gain control over the Bloodstone , a relic that is said to drip the blood of the saints , Radu kills his father .