Diana Rigg was a certified screen icon, and she even played an important role as a villain in season 7 of the science fiction series Doctor Who. Most remembered for her turn in the classic TV series The Avengers in the mid-1960s, Rigg's career also took her to the top of the film industry when she was a Bond girl in 1969's On Her Majesty's Secret Service. Besides being a film and TV star, Rigg was also noted for her dramatic abilities that she put to good use in numerous theatrical productions. A heavily decorated actor, Rigg secured Emmy, Tony, and BAFTA Award wins across her illustrious seven-decade career.

By 2013, Rigg was one of Great Britain's grand dames of the screen, and her appearance in Doctor Who's season 7 was a big get for the series. Although the episode she appeared in was a Doctor and companion-lite story, it was...