The real-life story behind the ITV drama The Pembrokeshire Murders. The key people who brought serial killer John Cooper to justice reveal all.
| Actor | Role |
|---|---|
 Suzanne PackerSelf - Narrator | Self - Narrator |
 Luke EvansNot listed | Not listed |
 Owen TealeNot listed | Not listed |
 Keith AllenNot listed | Not listed |
 Charles DaleNot listed | Not listed |