Bond is dispatched to spy on gold bullion dealer Auric Goldfinger. He ecnounters one of Goldfinger's workers, Tilly masterson at his hotel, but after talking to her, she is murdered by Goldfinger. He later meets her sister, Jill Masterson, who is plotting to murder Goldfinger to avenge her sister. They then uncover Goldfinger's plot to detonate a muclear device inside of Fort Knox, therefore contaminating the bullion and increasing the value of his own gold supply.