Cigarettes & Lies (Mattheo Riddle fanfiction)

Evelyn, one of the youngest members of the Black family line, is given a mission, where she needs to get close to her enemy: Mattheo Riddle. Dumbledore thought it would be a great idea to set yet another spy on the Dark side; he chose Evelyn, and Evelyn hates him for it, even though she eventually accepted the long journey. Further through the way, the mission seems to become her own priority too, for she wants to know more, to show them what she is, and what she is capable of. But then, she realizes she has broken her own two rules: do not feel, and: do not get fooled. And that's when everything turns upside down...