Each engrossed in their own thoughts, neither Rob nor Ivy pay any attention to the middle-aged man emerging from a side street further down the road. Dressed in working gear - boots, thick cotton trousers and short-sleeved shirt -- he hesitates at the corner as though uncertain whether to turn left or right, then begins to walk in their direction. Short and stocky, like many southern Italian men, he possesses the sun-darkened complexion typical of someone who spends his working life out of doors. Hands in his pockets, he saunters towards the tram stop, aware no doubt that ample time remains before the next tram is due.
Opposite the centre barrier separating traffic lanes and tram tracks, he steps towards the kerb, but not before noticing a couple making their way down the hill. As he wait
