From Blue Peter builds to fandom icons, Scarlett chats with Anthea Turner on going DIY-viral before it was a thing and Henry Calvert on Thunderbirds' impact on geek culture.

How a puppet show became a pop culture phenomenon. Scarlett meets Dee Anderson to explore the 1960s moment that launched Thunderbirds, and what it was like growing up in its universe.

Behind the strings and how they made the magic. Scarlett chats with puppeteer Mary Turner about Supermarionation and with Ella Vaday about the camp, fierce fashion of Lady Penelope.

Scarlett closes the series with Jamie, Gerry Anderson's son. They discuss growing up with a global icon, what Thunderbirds means to fans today, and how it is still inspirational.