"If it isn't nonsense, Tommy, then--I could not be at all, and you could not be at all ... we'd never meet each other, and you wouldn't have that research to do--and--and--" There was silence. Coghlan looked around on the floor. He picked up the reed pen. He said, unnecessarily: "I still don't believe this." But he dipped the pen in the thawing ink of the ink-pot. Laurie steadied the book for him to write. He wrote: _See Thomas Coghlan, 750 Fatima, Istanbul._ He looked at her and hesitated. Then he said: "There was something I'd say to myself ... written down here, it was what made me believe in it enough to trail along." He wrote: _Professor, president, so what?_ Ghalil said mildly: "I am sure you remember this address." "Yes," said Coghlan seriously. He wrote: _Gadget at 80 Hosain, second floor, back room._ Mannard said grimly: "It's still nonsense!" Coghlan wrote: _Make sure of Mannard. To be killed._ "That's a slight exaggeration," he observed slowly, "but it's necessary, to make us act as we did." He was smudging ink on his fingers when Ghalil said politely: "May I help? The professional touch--" Coghlan let him smear the smudgy black ink on his fingertips. Ghalil painstakingly rolled the four-finger-prints, the thumbprint below. He said calmly: "This is unique--to make a fingerprint record I will see again when it is seven centuries old! Now what?"