The conductor was striding through the early train from Paddington to Penzance apologising as we shuddered to a halt just east of the Tamar. "I'm sorry for the delay," he told Tony Benn, sitting opposite me. "There was a lightning strike on the line ahead."

Little more than a week after 9/11, Cofer Black gave instructions to his CIA team before their mission. "I don't want Bin Laden and his thugs captured, I want them dead … I want to see photos of their heads on pikes. I want Bin Laden's head shipped back in a box filled with dry ice. I want to show Bin Laden's head to the president. I promised him I would do that."