Bellatrix Lestrange is a fictional character of the Harry Potter series and is the sister of Narcissa Malfoy, the wife of Lucius Malfoy. She is a death eater who believes that Lord Voldemort is the supreme and everyone should follow him. In the Harry Potter movies she was played by Helena Bonham Carter. She has been to Azkaban, the wizard prison, but Lord Voldemort helped her and the other Death Eaters in Azkaban escape. She is killed by Molly Weasley at the end of book 7.