When twelve-year-old Jemma accidentally taps into a disused telecommunications satellite, she uses her new network to form a worldwide crime-fighting syndicate.
Mission Top Secret was another production by New Zealand-born television producer Roger Mirams, whose previous contributions to Australian children's television included The Terrific Adventures of the Terrible Ten, The Magic Boomerang, Adventures of the Seaspray, The Lost Islands, Secret Valley, Professor Poopsnagle's Steam Zeppelin, and Runaway Island.
Typically for a Roger Mirams' production, Mission Top Secret focuses on the independence and capability of the child protagonists, with adults limited to the roles of either advisor (Sir Joshua Cranberry) or villain (Neville Savage).
Although the program is listed in certain places (e.g., the Internet Movie Database) as an Australia/Spain/United Kingdom/New Zealand/The Netherlands co-production, the scripts were all by Australian writers, with the exception of the four episodes scripted by French television script-writers Jean-Jacques Gaffie and Benjamin Legrand.
