Quick Summary
Letter from San Quentin - Erin Moriarty joins 48 Hours to re‑examine the disputed murder conviction of California death‑row inmate Kevin Cooper, probing whether cutting‑edge DNA analysis could finally prove his innocence.
About This Program
Programme Overview
Letter from San Quentin is a compelling documentary episode broadcast on Cardiff TV that follows investigative journalist Erin Moriarty alongside the long‑running news programme 48 Hours. The episode delves into the contentious murder case of Kevin Cooper, a California inmate currently on death row, and examines whether cutting‑edge DNA technology might finally provide the decisive evidence needed to spare his life.
What to Expect
Viewers will be taken behind the scenes of a high‑profile American criminal investigation, witnessing Erin Moriarty’s meticulous interview techniques and the rigorous investigative methods employed by 48 Hours. The episode presents a balanced view of the legal and scientific arguments surrounding Cooper’s conviction, featuring expert commentary on the reliability of modern DNA analysis and its potential to overturn decades‑old verdicts. Archival footage, courtroom excerpts, and on‑location reporting from California’s notorious San Quentin State Prison create a vivid portrait of the case’s complexity.
Why Watch
For UK audiences, Letter from San Quentin offers a rare glimpse into the American justice system’s handling of death‑row cases, highlighting universal themes of truth, fairness, and the power of scientific advancement in the legal arena. The episode’s investigative depth and human‑focused storytelling make it a must‑watch for fans of true‑crime documentaries, legal drama enthusiasts, and anyone interested in the ethical implications of new forensic technologies.
Production and Appeal
Produced as part of Cardiff TV’s documentary strand, the episode blends rigorous journalism with cinematic storytelling, ensuring it resonates with British viewers who appreciate in‑depth, fact‑based programming. Its focus on a single, high‑stakes case provides a clear narrative arc, while the involvement of internationally recognised journalists underscores the episode’s credibility and relevance within the broader landscape of UK television documentary offerings.
48 Hours broadcasts on Cardiff TV at 4:00pm, Thursday, 6 November 2025.