Lex Barker plays an American private investigator who takes on an asssignment in South Africa to find out who a killer is, one by one people involved in the case get murdered, he's hot on their tail, but so is a police inspector played by a quite sleazy Ronald Fraser who's always cracking onto girls half his age. Good bit of 60's fun produced by Harry Alan Towers.
I've got two editions of this, didn't even realise, I just saw that the German one was a Lex Barker adventure film and ordered it without checking what it actually was. The U.K. one os slightly longer than the German one but the missing bits are on the German disc as extras, the German disc also has a lengthy interview with Towers so I suppose it's worth keeping both of them.

