To most people in Liverpool, he is known only as Boy A.
He is also known as a killer, specifically the killer of 12-year-old Ava White. In November last year, this 14-year-old's actions - fatally stabbing the schoolgirl in the neck in a busy city centre where the Christmas lights were being switched on the same evening, laughing, running away and covering his tracks before taking selfies and playing video games with his friends - shocked the region.
His act of violence was a sad indictment of how far Merseyside still has to go in combatting its problem with knife crime. And while we cannot tell you his name due to legal reasons, we can attempt to piece together the known fragments of Boy A's background which contributed to him becoming a teenage murderer.
