“I mean, how do you know the killer came through here?” “I suppose I was guessing,” said Pendergast, examining the next painting. “You see, when someone says ‘it’s impossible,’ I have this very bad habit, I can’t help myself, I immediately contradict that person in the most positive terms possible. A very bad habit, but one that I find hard to break. But of course, now we do know the killer came through here.”

