QUOTE : In the ensuing rush of adventure, there is little leisure for the reader to reflect upon how teen Snape would have felt glimpsing a werewolf at the end of a narrow tunnel, set up by his enemies. From the time Sirius and Lupin both headed back to his adult workplace, Snape has been battling memories of that episode. As far as Snape knows, the boy who once tried to get him killed and saw nothing wrong with turning his own werewolf friend into a killer could easily have become a mass murderer.