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Every morning Rachel catches the same commuter train. She knows that each time she waits at the same signal, overlooking a backgardens row. She's even begun to feel like she knows the people living in one of the houses. "Jess and Jason," she summons them. Their life is perfect—as she sees it. If only Rachel can be happy about it. And then she looks shocked. It's only a minute, but it's enough, until the train moves on. Now that's changed everything. Rachel now has an opportunity to become part of the lives she's only watched from afar. Now they're going to see; she's way more than just the girl on the train..