It's the oldest story in the world of murder; the love triangle. This one was played out in front of a crowded commuter platform in Italy's beautiful city of Bologna. Captured on camera, a jealous husband followed his wife, Giuliana, from her train and across the central railway station. Also captured on security cameras, his wife's lover, Alessandro, arriving for the romantic get-together. Neither he nor Giuliana even suspected Sergio Ucciero might be there. Sergio and his wife had been estranged for five years. She felt entitled to a new friendship. In fact, her lover and she were at the start of their relationship when Ucciero, with a knife hidden in a newspaper, pounced to murder on platform one.