Finishing a long day's work in the studio at the top of the house, Paul Barbour types the last line on a final page, rolls out the yellow sheet, clips it to a stack of manuscripts, and reaches across to press the buzzer, which rings in the library downstairs where his sister Claudia has been waiting for him. She needs to speak with him about something she got an insight into this morning, and it has been giving her the chills ever since...