Hinterland, also known by its original Welsh title Y Gwyll, is a British crime drama series that has earned attention for its eerie atmosphere, haunting landscapes, and deeply human characters. Set against the rugged backdrop of Aberystwyth on the west coast of Wales, this noir police procedural follows Detective Chief Inspector Tom Mathias and his team as they confront mysterious and often unsettling crimes. The show stands out not just for its gripping storytelling but also for how it uses the talents of its cast to explore themes of grief, isolation, and moral complexity. The performers bring these layered narratives to life, blending personal struggles with the demands of police work and creating a memorable cast that has resonated with audiences around the world.
The Core Ensemble of Hinterland
Richard Harrington as DCI Tom Mathias
At the heart of Hinterland is Richard Harrington’s portrayal of Detective Chief Inspector Tom Mathias, a brooding and driven detective who carries the weight of his past with him into every case. Mathias, a former London officer, arrives in Aberystwyth seeking a fresh start, yet he finds that the small coastal town holds its own dark secrets and emotional challenges. Harrington’s performance captures both the intellectual sharpness and emotional turmoil of a man wrestling with personal trauma while trying to solve the most baffling crimes. This role has been widely praised and helped define the tone of the series.
Mali Harries as DI Mared Rhys
Working closely with Mathias is Detective Inspector Mared Rhys, portrayed by Mali Harries. Rhys is a grounded and insightful investigator whose local knowledge and practical approach complement Mathias’s intensity. Their partnership is central to the series, offering a balance between Mathias’s emotional depth and Rhys’s more methodical perspective. Harries brings a sense of resilience and intelligence to the character, making DI Rhys a key figure in how the team navigates both crime scenes and interpersonal dynamics.
Alex Harries as DC Lloyd Ellis
Alex Harries plays Detective Constable Lloyd Ellis, a younger officer whose work alongside Mathias and Rhys adds important energy to the ensemble. Ellis often acts as a bridge between the intense focus of his senior colleagues and the practical demands of police work in rural Wales. His evolving experience throughout the series reflects both the steep learning curve of detective work and the way intense criminal investigations shape a person’s character over time.
Hannah Daniel as DS Siân Owens
Hannah Daniel appears as Detective Sergeant Siân Owens, bringing depth and nuance to the investigative team. Owens is a seasoned and perceptive officer, often contributing crucial insight during complex cases. Her presence in the group helps maintain stability amid emotionally charged investigations, and Daniel’s performance provides a strong female voice within the central cast, offering both competence and empathy in equal measure.
Aneirin Hughes as Chief Superintendent Brian Prosser
Aneirin Hughes portrays Chief Superintendent Brian Prosser, a senior officer whose relationship with the main investigative team can be complicated. Prosser’s leadership style and occasional pressure on the detectives introduce another layer to the story, illustrating the tension that can exist between police hierarchy and field investigators. Hughes gives Prosser a presence that is authoritative and sometimes conflicted, emphasizing the challenges of police administration in tense situations.
Supporting and Recurring Characters
While the core ensemble drives the majority of Hinterland, the series also features a range of supporting and recurring actors who enrich the narrative with additional perspectives and personal stakes. These characters often appear in specific investigations or have ongoing connections with the main cast, enhancing both the mystery and emotional resonance of the show.
- Geraint Morgan as Iwan Thomas– A recurring local figure whose involvement in certain cases highlights the series’s focus on community and hidden histories.
- Geraint Lewis as Dr. Haydn Blake– A medical professional whose expertise supports forensic investigations and adds depth to the procedural elements.
- Llyr Ifans as Gareth Thomas– Another recurring character whose role intersects with key plotlines and the personal lives of the detectives.
- Sioned Dafydd as Elin Rhys– A local resident whose interactions with the team bring out personal dimensions of the cases.
- Sian Reese-Williams as Manon– Appearing in select episodes, this character adds complexity to specific investigations.
- Anamaria Marinca as Meg Mathias– In a notable guest role, she portrays Mathias’s estranged wife in flashbacks and pivotal scenes that illuminate his troubled past.
Character Dynamics That Drive the Story
One of the strengths of Hinterland is how its cast interacts within the bleakly beautiful setting of Aberystwyth. The relationships between characters are as much a part of the story as the crimes they investigate. For example, the dynamic between DCI Tom Mathias and DI Mared Rhys blends respect with occasional tension, reflecting both professional collaboration and differing personal approaches to policing. These interactions help make the series compelling not just as a mystery but as a study of human behavior under pressure.
Similarly, DC Lloyd Ellis and DS Siân Owens often represent the steadiness needed to ground the more emotionally intense figures like Mathias. Younger officers such as Ellis provide a fresh perspective on how investigative work shapes a detective’s outlook, while seasoned officers like Owens bring wisdom that can defuse or accentuate critical moments. Supporting characters, whether recurring townspeople or specific case-related roles, give texture to the world the show builds, making Aberystwyth itself almost a character in the story.
The Cast’s Contribution to the Series’s Tone and Success
The success of Hinterland can be attributed in large part to its ensemble cast, whose performances help define the show’s distinctive blend of crime procedural and psychological drama. Each actor brings nuance to their role, creating characters who feel lived-in and real, even amid the show’s darker plotlines. The emotional depth portrayed by the cast elevates Hinterland beyond a standard crime series, making it a rich exploration of how communities deal with loss, suspicion, and the pursuit of truth.
Because much of the series was shot twiceonce in Welsh and once in Englishactors had the unique challenge of performing all scenes in two languages, a detail that underscores both their versatility and the series’s commitment to cultural authenticity. This bilingual approach also helped the show reach wider audiences while maintaining a rooted sense of place and local identity.
Legacy of the Cast and Series
Since its debut in 2013, Hinterland has become an influential example of Welsh noir and rural crime drama. The cast’s work helped the show earn critical recognition and a devoted international fan base. Their portrayals of complex detectives and supporting roles have ensured that the series remains compelling even years after its original broadcast. By combining evocative landscapes, haunting storylines, and deeply human performances, the cast of Hinterland made the series more than just a crime dramait became an atmospheric study of character, community, and the mysteries that lie beneath the surface.