The Avengers
(1961–1969)
A powerful computer used to target incoming missiles continually breaks down. When one of scientists who developed the machine is found dead inside it, Steed and Cathy are asked to investigate.
Cathy Gale takes the lead here. She poses as an anthropologist who learning about a new British supercomputer called Plato. However one of the scientists on the project is killed. There is concern about the loud cocky project leader Dr James Kearns (Anthony Booth) who likes to play poker too much with shady types and makes himself vulnerable to malign influences.
Cathy Gale accompanies Kearns as he mounts up loses in his poker games. She also discovers that another scientist is killed and then both her and Kearns are locked with the temperature getting colder and colder.
Steed does show up with his handy umbrella for one important scene but this Gayle who once again shows off her martial arts skill.
It is a bit of a mystery thriller, a case of who is the saboteur. The scene where they are supposedly freezing to death did not have the most convincing acting.