Bewitched

Is it love or is it witchcraft? He'll never find out if he kills her first.The first time Darren saw Samantha, she was floating above his high school gymnasium during a basketball game, invisible to everyone but him. Next time he sees her, she's sitting in front of him in class, wowing his friends and causing unexplainable things to happen that only he seems to notice. But things really get strange (and complicated) when his dying grandfather tells him that he is part of an ancient order, the "Pessum Ire," whose duty is to destroy witches. What does he do now, since he's almost positive Samantha is a witch...and he's crushing on her pretty hard?