A boy detective, with Colonel Audacious and his wonderful invention, in a model aeroplane, the 'flying-eye', foil the efforts of international thieves to steal a secret formula.
| Actor | Role |
|---|---|
 Julia LockwoodNot listed | Not listed |
 Harcourt WilliamsNot listed | Not listed |
 Geoffrey SumnerNot listed | Not listed |
| DDavid HannafordNot listed | Not listed |