Lost Horizon (novel)
This neurologist friend named Rutherford were eating dinner at Tempelhof, Berlin with their old school-friend Wyland. The topic of Hugh Conway comes up in conversation. He was a British consul in Afghanistan, who disappeared mysteriously. Rutherford tells the narrator later that evening that he met Conway in a French mission hospital in Chung-Kiang (probably Chongqing), China. Conway had amnesia, but recovered his memory. He told Rutherford his story, then disappeared again.