Another production by Roger Mirams, Runaway Island was a period drama, but like The Terrific Adventures of the Terrible Ten, The Magic Boomerang, and Secret Valley, it focused strongly on independent child protagonists who operated in a world that was either largely without adults or in which the adults were antagonists.
In his Guide to Australian TV Series, Moran notes that the program follows the adventures of two children, Jamie and Jemma McLeod, who
see their father's lands and house in early Sydney Town seized by the wicked Captain Korkle, who has plans to become governor. To escape his soldiers, the children take off with a young pickpocket off the streets. They and other children escape to Runaway Island, an island off the Sydney coast. They are safe there, though they make some dangerous forays back into the town.
Moran notes that the production cost over $2 million, but was left languishing for more than two years before the Seven Network finally aired it. When Seven did air it, it attracted a reasonable audience, and sold in sixteen countries other than Australia.
As with his earlier productions, The Terrific Adventures of the Terrible Ten and The Magic Boomerang, Mirams re-used actors from his previous show, Secret Valley, in this production (namely, the Buchanan siblings).
