Luke Evans portrays detective Steve Wilkins, who pursues a pair of cold cases from the 1980s, though his performance lacks distinctiveness. The primary person of interest is John Cooper, already incarcerated for separate offenses and nearing release. It's an accelerated narrative concerning Cooper’s actual conviction. Keith Allen delivers a disturbing depiction of Cooper. The story incorporates developments in DNA technology alongside traditional police methods. The series compresses the five-year inquiry led by Wilkins; it seems hesitant to offer criticism regarding the initial investigation, which appeared problematic.

Source on TMDB