| JJon VenablesSelf - Murderer, child | Self - Murderer, child |
| RRobert ThompsonSelf - Murderer, child | Self - Murderer, child |
| JJames BulgerSelf - Victim, angel | Self - Victim, angel |
 Siobhan FinneranNarrator | Narrator |
| DDavid James SmithSelf - Journalist, Author, case expert | Self - Journalist, Author, case expert |
| DDenise FergusSelf - Mother of James | Self - Mother of James |
| RRalph BulgerSelf - Father of James | Self - Father of James |
| AArnon BentovimSelf - Jon Venables' Psychiatrist | Self - Jon Venables' Psychiatrist |
| JJim FitzsimmonsSelf - Detective Inspector, Merseyside Police | Self - Detective Inspector, Merseyside Police |
| MMandy WallerSelf - Family Liaison Officer for the Bulger family | Self - Family Liaison Officer for the Bulger family |
| LLaurence LeeSelf - Jon Venables' Trial Solicitor | Self - Jon Venables' Trial Solicitor |
| AAmanda KnowlesSelf - Secure Children's Home Manager | Self - Secure Children's Home Manager |
| AAlbert KirbySelf - Merseyside Police | Self - Merseyside Police |
| DDominic LloydSelf - Robert Thompson's Solicitor | Self - Robert Thompson's Solicitor |
| MMalcolm StevensSelf - Senior Advisor to the Home Secretary | Self - Senior Advisor to the Home Secretary |
| MMichael HowardSelf - Home Secretary | Self - Home Secretary |
