Harry defeats Voldemort in the graveyard and suddenly finds himself with a lot more time to focus on his studies. Severus sees that Harry is truly gifted at potions and once Harry leaves school, offers him an apprenticeship. But as the two work closely together for an extended period of time, Harry starts to notice things. Outdated customs, skirting around certain subjects and intimate knowledge of rituals and spells long forgotten to the general populace. Severus has been hiding a large secret indeed. Now Complete!