Episode 18

with Valerie Singleton and John Noakes. Can you design a monster? If you think you can design one tough enough to beat the Daleks watch today's edition of "Blue Peter" for details of a new competition. The three first prize-winning designs will be built by the BBC's special effects department to go on display at the next Boys' and Girls' Exhibition at Olympia, and may even play leading parts in "Dr Who"!