‘We go after them like pitbulls’ – the art detective who hunts stolen Picassos and lost Matisses

Christopher Marinello has spent three decades finding missing masterpieces, recovering half a billion dollars’ worth of art. He talks about threats from mobsters, tricky negotiations – and bungling thievesOne summer morning in 2008, Christopher Marinello was waiting on 72nd Street in Manhattan, New York. The traffic was busy, but after a few minutes he saw what he was waiting for: a gold Mercedes with blacked-out windows drew near. As it pulled up to the kerb, a man in the passenger