Tunnel of Fear

"Tunnel of Fear" is the 20th episode of the first series of the 1960s cult British spy-fi television series The Avengers, starring Ian Hendry, Patrick Macnee and Ingrid Hafner, and guest starring John Salew, Anthony Bate and Miranda Connell. It was recorded on 405-line monochrome videotape on 3 August 1961 and was first broadcast by ABC on 5 August 1961. It is one of the three known complete series 1 episodes to have survived being purged from the ABC archives and was rediscovered in 2016 when it was found in a private collection. The episode was directed by Guy Verney and written by John Kruse.