In America, juvenile murderers serving life without parole are getting the chance to appeal.
To shed light on this emotive issue, Susanna Reid travels to the US to meet Josh Phillips, who killed eight-year-old Maddie Clifton when he was 14.
Phillips, now 33, has granted Susanna his only press interview as the case comes up for review. So why did he murder Maddie, who was his friend? And does he deserve freedom?