Curiosity and Cats

Not much gets past Minerva McGonagall. Quick-witted and powerful, she prides herself on being able to tell who's good and who's evil. Yet, when it comes to her colleague, Severus Snape, she's always had her doubts. Certainly, she trusts Dumbledore's judgment, but when Dumbledore is suddenly gone, she is left to make her own observations.