Rachel catches the same commuter train every morning. She knows it will wait at the same signal each time, over looking a row of back gardens .
She's even started to feel like she knows the people who live in one of the houses. Their life as she sees it is perfect. If only Rachel could be that happy.
And then she sees something shocking , and in one moment everything changes.
Now Rachel has a chance to become a part of lives she's only watched from afar.
Now they'll see: She's much more than just a girl on the train...