One May day in 1953, a good-looking brunette walked into the Berlin headquarters of U.S. Air Force intelligence, batted her black eyes at a pair of intelligence officers and confided that she had some secrets to tell about the East German Communist government. Air Force intelligence was fascinatednot so much by Irmgard ("Gardy") Schmidt's secrets as by her more public assets.
Before long, Gardy Schmidt had one highly placed U.S. officer frisking about in hot-breathed deference to her wants. The officer, identified with embarrassed reticence only as "a high official in a...