Like a Hand in a Flame

Harry is abused by his Uncle Vernon, until one day Snape arrives unexpectedly at the Dursley house and rescues him. Will Harry recover under the less-than-cordial eye of his surly potions professor? What will happen to him now that he can't go home again? (I know this genre is done to death, but I love it and wanted to add my own entry.) Will be multi-chapter, AU.