In the United States, wrongfully convicted people are imprisoned for 11 years on average before proving their innocence. The West Memphis Three were three teens convicted of murder who were the subject of an HBO documentary film series highlighting their innocence. Following public outrage, the three (now) men were eventually set free – but only by utilising an oddity of the US criminal justice system known as an Alford plea – allowing them to assert their innocence while admitting there was enough evidence to find them guilty.