A 45-year-old Undersecretary in the Washington, DC, based Terrestrial Department of Justice (TDJ), Demacheck comes to the City (probably New York) to recruit protagonist Elijah Baley for a sensitive investigation on the Spacer world Aurora. Although there are many females in high offices on Earth, Baley is surprised by Demacheck. She has cleanly-chiseled, regular features, dark hair beginning to gray, and prominent breasts. She reports to Vice-Secretary Albert Minnim, who had sent Baley to Solaria and whom Baley has been asking for help visiting Aurora about his colonization project. Demacheck describes the tense political situation on Aurora, centering on the moderate Dr. Han Fastolfe. She delicately mentions that Fastolfe is accused by extremist enemies of murdering a humaniform robot and has requested Baley's help. Earth will suffer if Baley refuses to go—or if he fails in his mission. She gives him six hours to be ready to depart.