Harry had a normal childhood. Then one day he reads a letter from Severus Snape. His life ultimately changes after meeting the Potions Master, and together they discover secrets that will rock the Wizarding World. An AU. Contains: Slyththerin! Harry; manipulative! evil! Dumbledore; Weasley, Granger, and Dumbles bashing; good! nice! Petunia. And Snarry. More in AN.