The Kingfisher Caper

The Kingfisher Caper released as Diamond Hunters in South Africa and as Diamond Lust on video is a 1975 South African film directed by Dirk DeVilliers for Kavalier Films Ltd. It stars Hayley Mills as Tracey van der Byl, David McCallum Benedict van der Byl, Jon Cypher Johnny Lance, Volente Bertotti Ruby Lance, Barry Trengove Cappy and Bill McNaught Hendrich van der Byl.

Source: Wikipedia