How a 14-year-old boy became the youngest person to be executed in the USA during the 20th century. George Stinney Jr was sent to the electric chair in 1944. He had been tried for the murder of two young girls, but when the case was reviewed by a court in South Carolina in 2014 his conviction was annulled. Ashley Byrne has been speaking to George Stinney Jr's sister Katherine Robinson, and to Matt Burgess who was one of the team of lawyers who fought to clear his name.

Photo: George Stinney Jr in 1944. Credit Alamy.