Story of a group of children's successful efforts to bring to book a gang of oil men intent on stealing valuable invention.
Frazer Hines
Kim
Meredith Edwards
Police Constable Durrant
Peter Copley
Mr. Ritter
Dorothy Gordon
Miss Clark
John Horsley
Fireman
Christopher Warbey
Freddie
Ali Allen
Ali
Katherine Kath
Anita Fox
Paul Daneman
Professor Picton
Mandy Harper
Pat
David Bird
Mr. Cook
Ian Whittaker
Rupert
