Three kids get mixed up with jewel thieves and stolen diamonds in a 24-hour road rally.
as Robert 'Bobby' Stewart
as Henry Stewart
as Insp. Cook
as Mercer
as Finch
as Wheeler
as Jock
as Sir Hilary Stanton
as Lady Truesdale
as Gus Ashley
as Benjy
as Charlie Todd
as Susan Stewart
as Elizabeth (uncredited)
as Peter Pitt
as Steward
as Whiteman
as Junkman
as Billy
as PC Andrew
as Steward
as Mrs. Maggie Stewart
as Insp. Timothy
