Jürgen Matthäus has for years been investigating the killer – and is confident he has finally solved the mystery Jürgen Matthäus has for years been investigating the killer – and is confident he has finally solved the mystery I t is one of the most chilling images of the Holocaust: a bespectacled Nazi soldier trains a pistol at the head of a resigned man kneeling in a suit before a pit full of corpses. German troops encircle the scene. The picture taken in today’s Ukraine was long known,