The recent arrest of Philip Markoff, the accused Craigslist Killer, shakes us up because it is an example of a façade of normality covering an action of evil. It takes the idiom, 'you can't judge a book by its cover' to the extreme. I wonder how, if the accusations prove to be true, his current fiancée will ever trust her own judgment again. In the face of mass betrayal, we question our…