There are thirteen Luas stops between Sandyford and St. Stephen's Green in Dublin, each significant in the lives of the people who step on and off the tram every day. The passengers all hunker down, folded tightly into themselves, eyes fixed on their phones, interminably scrolling, terrified of connecting with each other. Except . . . Except, who's that good-looking guy in the long dark coat who's eyeing up Selfie Queen Laura? Could he end up as one of her terrible choices? Hang on, isn't he the same guy who was ogling glamorous working-mum-with-a-secret Maroon before? And why is Jamie over there telling his life story to a complete stranger? What's Fauve hiding in her handbag? It must be the Crown Jewels at the very least, the way she's clutching it so tightly to herself. And why does Becks from two seats down look out the window so anxiously? Is she worried that Barry could be straying? Alight here for the inside track . . .