Unreported World exposes the plight of hundreds of children in Burundi locked up for years without trial in adult prisons, among some of the most dangerous criminals in the country. And they meet one man who has dedicated his life to freeing them; Pierre-Claver Mbonimpa is the only hope many of these children have.

Reporter Krishnan Guru-Murthy and director Daniel Bogado travel to Yemen to reveal the scores of young men locked up in prisons and awaiting execution for crimes they are accused of committing while they were children.