黑寡妇ESSENTIALBolzano, Southern Tyrol. Though part of Italy, many speak German here. It's a city with two faces. On one side, those of German heritage - precise, rigorous, and well off. On the other, Italians - loud and passionate. But both sides are equally shaken when a ruthless serial killer comes back, targeting German-speaking victims. He has been active years ago, when Paolo, an Italia...