Where did the system fail Ellie Butler?
When Mrs Justice Hogg decided to hand Ellie Butler back to her violent father, she was warned: "You are going to have blood on your hands", according to a source.
Ellie's maternal grandfather Neal Gray, who had cared for her since she was a baby, had strongly protested against the move to award custody to her parents in the family division of the High Court.
Within months, his worst fears came true when Ben Butler killed his six-year-old daughter in a fit of rage. Ellie died on 28 October 2013 as a result of of injuries that were likened to those caused in a high-speed car crash.
How could this be allowed to happen? We spoke to former social services and child protection expert Dr Ray Jones.