The Nutshell (The Avengers)

"The Nutshell" is the fourth episode of the third series of the 1960s cult British spy-fi television series The Avengers, starring Patrick Macnee and Honor Blackman. It was first broadcast by ABC on 19 October 1963. The episode was directed by Raymond Menmuir.

Plot
Steed and Cathy investigate espionage by a pretty burglar in "The Nutshell", codename for a top-secret underground nuclear shelter. They are not telling each other everything, and somewhere a traitor lurks.

Cast

 * Patrick Macnee as John Steed
 * Honor Blackman as Cathy Gale
 * Bud Tingwell as Mick Venner
 * John Cater as Disco
 * Patricia Haines as Laura
 * Christine Shaw as Susan Campbell
 * Edina Ronay as Elin Strindberg
 * Ian Clark as Anderson
 * Ray Browne as Alex
 * Jan Conrad as Jason Avon
 * Edwin Brown as Military Policeman, Bill