Tripods - Season 1 - Eps 9: France - September, 2089 A.D.
The Tripods strategy is revealed when a homing bug is found in Will. The device is removed, but it´s a bloody accomplishment and he is left very weak. Now they are trapped in a tunnel.
About Tripods

Title: Tripods
First Air Date: 1984-09-15
Last Air Date: 1985-11-23
Status: Ended
Rating: 7/10 (from 14 votes)
Language: EN
Seasons: 2
Total Episodes: 25
Network: BBC One
Genres: Sci-Fi & Fantasy
Production Companies: Unknown
Synopsis
In the year 2089, an alien race stalks the land in towering machines known as Tripods. They have taken over the earth and enslaved mankind with a mind-controlling device, ceremoniously implanted at adolescence. Will Parker, desperate to escape this ritual, leaves the village with his cousin, Henry and attempts to link up with the human resistance movement.
Cast

John Shackley
Will Parker

Jim Baker
Henry Parker

Ceri Seel
Jean-Paul „Beanpole“ Deliet

Robin Hayter
Fritz Eger

John Woodvine
Meister West 468