Fred Ward is imprisoned for horse stealing. He escapes from Cockatoo Island and under the name of Captain Thunderbolt becomes a bushranger, working with his friend and fellow escapee Alan Blake.
| Actor | Role |
|---|---|
 Grant TaylorCaptain Thunderbolt | Captain Thunderbolt |
 Charles TingwellAlan Blake | Alan Blake |
| RRosemary MillerJoan | Joan |
 Harp McGuireSgt Mannix | Sgt Mannix |