The Avengers
Square Root of Evil
Season 1, Episode 3 · Aired 1961-01-21
Synopsis
Square Root of Evil — Season 1, Episode 3 of The Avengers. Aired 1961-01-21. Full plot synopsis not yet on file; see the show package for context.
In the series
This episode is part of The Avengers (1961–1969) on ITV.
Bowler hats, catsuits, and mod spy cool — Steed and Peel redefine TV style.
Key cast
- Patrick Macnee as John Steed
- Diana Rigg as Emma Peel
- Honor Blackman as Cathy Gale
- Linda Thorson as Tara King