This is what every parent fears: their child not coming home on time. When 15-year-old student Rachel Barber doesn't climb off the tram, her parents, Elizabeth and Mike, bolt into action.This is what every parent fears: their child not coming home on time. When 15-year-old student Rachel Barber doesn't climb off the tram, her parents, Elizabeth and Mike, bolt into action.This is what every parent fears: their child not coming home on time. When 15-year-old student Rachel Barber doesn't climb off the tram, her parents, Elizabeth and Mike, bolt into action.