The Avengers - Season 6 - Eps 21: Love All
Security lapses seem to point to top civil servants suddenly falling in love and giving secrets to an enemy agent disguised as a char lady. Steed investigates, but first has to save Tara from killing herself out of unrequited love.
About The Avengers

Title: The Avengers
First Air Date: 1961-01-07
Last Air Date: 1969-05-21
Status: Ended
Rating: 7.7/10 (from 136 votes)
Language: EN
Seasons: 7
Total Episodes: 161
Network: ITV1
Genres: Action & Adventure, Crime, Sci-Fi & Fantasy
Production Companies: Associated British Picture Corporation, Associated British Corporation, ABC Weekend Television
Synopsis
The Avengers is a British television series created in the 1960s. It initially focused on Dr. David Keel and his assistant John Steed. Hendry left after the first series and Steed 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. Later episodes increasingly incorporated elements of science fiction and fantasy, parody and British eccentricity.
Cast

Patrick Macnee
John Steed

Linda Thorson
Tara King