An emotional appeal has been made by the parents of a missing 15-year-old girl from Colchester.
Ella Hysom was being treated for depression at a residential hospital in London for six weeks before she disappeared two days ago. Her parents say she's vulnerable.
There's been no contact since the day she went missing.
Click below to watch a report from ITV News Anglia's Luke Farrington
If you think you have seen Ella, or you know where she is, please contact the Metropolitan police.
You can either call the police directly on 020 8345 2751 or by using their 101 service.