This happened a long time ago - year 96 or 97 I think. I remember it was late in November or probably early December. I was a student and I would take the train from Harvard to Quincy. One day, I was returning home very late, close to midnight. I usually got into the last car of the train, because it would usually be less crowded. On this particular trip, I was the lone person on the car (probably next one also).A couple...