already." "Sorry." She didn't sound so sorry to
             Crozier's ears. "Anyway, what about that discussion we were having a couple of days ago that you promised to
             finish yesterday but didn't?" "Which one was that again?" "Famous detective strategies. You are supposed to be
             teaching me, right?" "Yeah, right. Where did we leave off?" "You were telling me about some of your favorite
             novels." "Yeah, now I remember. We left off at MURDER ON THE ORIENT EXPRESS, by Agatha Christie. In this
             novel, Hercule Poirot is trying to solve a case of murder on board a train. He quickly discovered that everyone had a
             motive, the means, and an opportunity, or some combination of the three. Therefore, not a person on the train stood
             out as a suspect. Further, they also all had an alibi that was confirmed by another suspect-hardly a great basis for
             belief in the alibi. So what was the only answer?" Lois thought about it for a few seconds, and then gave up. &
             ...