Mirror Images

When Harry Potter finally arrives at Hogwarts, Professor Severus Snape is drawn- unwillingly- into his orbit. He will find out there is more than meets the eye, and Harry will give an adult one more chance to prove trustworthy. (Featuring Snape growing as a person, no slash obviously, *only* canon manipulative behaviour from Dumbledore, Voldemort drama and classic Gryffindor!Harry)