*Jill Masterson was the aide-de-camp of billionaire industrialist, Auric Goldfinger, whom James Bond catches helping the villain cheat at a game of canasta. A secondary Bond girl, she was based on the literary character Jill Masterton, who first appeared in the 1959 Ian Fleming novel Goldfinger, she was portrayed by British actress and model Shirley Eaton in its 1964 film adaptation of the same name. Although only a small part in the film, Jill's death from "skin suffocation" have become an iconic scene on the cinema's history.

Jill Masterson unwittingly got herself involved with the obsessive and pathological criminal, Auric Goldfinger. She quickly became his kept lady and helped him win at cards and to be "seen" with him. She can see Goldfinger's opponent’s cards through her high-powered binoculars. She communicates via radio with Goldfinger (who receives the messages through a false hearing aid), telling him what cards his opponent has and what is going on in the game.

When CIA operative Felix Leiter meets James Bond at the Fontainebleau Hotel in Miami, and tells him M wants him to look into Auric Goldfinger, he points out Goldfinger's astonishing luck at cards. Bond observes a game of Gin Rummy between Goldfinger and Simmons, and suspects some foul play. He sneaks into Goldfinger's suite and finds Jill lying on a sun-bed on the balcony. 007 questions the young woman, and after implying otherwise, discovers that their relationship is merely professional. He uses the radio to talk to his boss, threatening to call the Miami Beach Police unless he loses the money he has gained by cheating.

Jill is impressed by Bond's daring move, and the two of them go back to his hotel suite. But Goldfinger, out of pettiness and massive greed for losing a small amount of money, is angered by her betrayal, and gets his revenge, sending his henchman Oddjob to kill her. Oddjob knocks her unconscious and paints her entire body in gold paint, causing her to die from skin asphyxiation.

Jill's sister, Tilly, attempts to avenge her sister by assassinating Goldfinger. Unfortunately she fails each time, and her persistence leads to her own death, struck in the neck by Oddjob's Razor-Rimmed Hat.

She is described as roughly five feet ten with an athletic, lightly sunburned body, pale blonde hair (which fell heavily to her shoulders, unfashionably long) and deep blue eyes.*