On the night of January the 20th, at seven o'clock John closed the door to his office, then shut off the light, and turned the brass door knob of his office just enough to make sure it was locked. John had done this for almost eight years now and said goodbye before leaving, to William, who usually stayed until seven- thirty. They had both known each other since medical school and grew up only eighty miles away from where they now worked.......(cont)