Sarah Green was a 17-year old girl who died as a result of self-harming while an inpatient in a mental health unit.

The BBC's Panorama has been given access to Sarah's diary, which shows how she was failed by the child and adolescent mental health system in England.

Panorama's Peter Marshall reports.

You can watch Panorama "I'm Broken Inside: Sara's Story" on Monday 11 April at 19:30 BST on BBC One. Or catch up later here on iPlayer.