After a secret trip to Germany, a young North Sider returned in 1942 with other conspirators to steal U.S. military secrets and sabotage defense industries — but he was done in by a handkerchiefA spy story worthy of John le Carre began and ended 70 years ago this summer in Chicago. It had classic elements of an espionage tale — enemy agents landed from submarines, explosives hidden in the sand of an East Coast beach, orders written in invisible ink — and Herbert Haupt, a young man from the North Side who participated in the first invasion of the U.S....
