The riddle of the Black and Decker murder: Brit tool company boss was gunned down outside his villa in the South of France... 40 years later his daughters think they finally know why

AI Briefing

• – Kenneth Marston, a Brit tool company boss, was murdered outside his villa in France 40 years ago.
• – Investigations explored various theories but no clear motive was found.
• – His daughters believe they may have finally discovered the motive.