An adventure in three parts based on a JULES VERNE story
2: Marcel Zodiac is sent as a spy to Steel City. He witnesses an accident, and so finds that a huge and deadly secret weapon is being made. But why, and what for? He contacts the designer but realises too late that it's a case of mistaken identity - he's face to face with an agent waiting to catch the spy from Fortuna.
Presented by DAPHNE JONES
Produced by CZECHOSLOVAK TELEXPORT