Esmeralda Riddle is the Dark Lords daughter, she has only just discovered and now her father wants her to go to Hogwarts to spy on Potter. Two weeks until she goes for her fifth year, not wanting to go purely out of the fact that she'll be leaving Malfoy Manor and Lucius Malfoy who she secretly loves but knows its wrong. What will happen when a certain dark mysterious potions master enters her life and falls for her? (A/N Bio is crap I know. First proper story I'm actually going to write, note this fanfic contains smut.)