 Harrop returned to Washington to become Inspector General of the Department of State and the Foreign Service, serving from December 12, 1983, to August 27, 1986.Harrop was part of a group of three diplomats appointed by Secretary of State George P. Shultz as part of a new "management team," the others being Ronald I. Spiers (Under Secretary for Management) and Alfred (Roy) Atherton (Director General of the Foreign Service).As inspector general, Harrop reformed the office's investigative and auditing functions and oversaw investigations relating to allegations of corruption and sexual harassment.