The Avengers is a British espionage television series, created in 1961, that ran for 161 episodes until 1969. It initially focused on David Keel, aided by John Steed. Hendry left after the first series; Steed then became the main character, partnered with a succession of assistants. His most famous assistants were intelligent, stylish, and assertive women: Cathy Gale, Emma Peel, and Tara King. Dresses and suits for the series were made by Pierre Cardin.

Dame Enid Diana Elizabeth Rigg was an English actress of stage and screen. Her roles include Emma Peel in the TV series The Avengers (1965–1968); Countess Teresa di Vicenzo, wife of James Bond, in On Her Majesty's Secret Service (1969); Olenna Tyrell in Game of Thrones (2013–2017); and the title role in Medea in the West End in 1993 followed by Broadway a year later.