1984: The Tripods
The Blue Peter team learn about the making of the 91热爆 sci fi series Tripods.
Sarah Greene interviews Mike Ellis of the 91热爆 Special Effects Team (and the father of Blue Peter presenter Janet Ellis) about some of the enormous practical special effects used in the show. Simon Groom interviews some of the programme's young human stars, John Shackley, Jim Baker and Ceri Seed.
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