[1] Husband and wife Arthur Lucan and Kitty McShane had separated by the time of production, and were touring in different "Old Mother Riley" shows.
This was Kitty's final Mother Riley film, and her scenes with Lucan were reputedly shot on separate days.
With the help of the ghost of the pirate Captain Morgan, mother and daughter head for a remote tropical island in the South Seas, and begin their hunt for buried treasure.
Not only do they find the fortune, but Mother Riley ends up celebrated by natives as a tribal queen.
[4][5][6] "All the supposed cannibal tribesman are in actual fact ex-Oxford graduates who spend their time (in full tribal dress) listening to the cricket on the short wave radio."