The Salzburg Connection is based on a novel by Helen MacInnes, and is a rather unoriginal spy thriller with the usual ingredients that characterise practically all early '70s movies within the genre... by Helen MacInnes. Members.
"MacInnes, Helen ." American Women Writers: A Critical Reference Guide from Colonial Times to the... Helen Clark MacInnes (October 7, 1907 - September 20, 1985) was a Scottish-American author of espionage novels. Helen Clark MacInnes was born on October 7, 1907 in Glasgow to Donald MacInnes and Jessica McDiarmid.