"Poker Face"@en . . "Stone Face"@en . . "Hanns-Joachim Gottlob Scharff (December 16, 1907 \u2013 September 10, 1992) was a German Luftwaffe interrogator during the Second World War. He has been called the \"Master Interrogator\" of the Luftwaffe and possibly all of Nazi Germany; he has also been praised for his contribution in shaping U.S. interrogation techniques after the war."@en . . . "Scharff, Hanns"@en . . "1942Z"^^ . "1907Z"^^ . "German interrogator and artist" . "Hanns-Joachim Gottlob Scharff"@en . "1907-12-16Z"^^ . . . "1992Z"^^ . "1992-09-10Z"^^ . . . . .