'This person is a snake of the worst kind'. Those were the chilling words of an American interrogator after spending four hours in the company of the slippery Nazi Friedrich Kadgien. Now, nearly 50 years after his death, the misdeeds of the wartime SS officer and leading aide of the monstrous Hermann Goering are finally getting the attention they deserve. As the Mail reported last week, the listing of a property owned by his daughter in a suburb of Buenos Aires - where he died in 1978 - sparked a police search for a painting allegedly stolen from a Jewish...