'He took out his watch and looked at it. He rested for one minute as timed on his watch. He opened the briefcase and took out a passport and a pair of spectacles. He put the spectacles on and looked at his passport, and realised he was the man in the picture. A gunshot rang out.' Part thriller, part spy novel, Exchange Place is set between Belfast and Paris and tracks the individual movements of two men, John Kilfeather and John Kilpatrick,...