In August 2015 two amateur researchers declared they had found a lost Nazi train buried in a railway cutting near Walbrzych in Silesia, southern Poland. This followed decades of local folklore that a train, loaded with gold, had vanished after leaving Wroclaw in early 1945. Dan Snow follows the treasure hunters as they embark on the hunt, while also investigating this extraordinary story that leads all the way to Adolf Hitler himself and his secret plans for this remote corner of the Third Reich during the closing months of the Second World War.