Silent Witness Season 28 premieres on September 25, 2025 on BritBox, continuing its legacy as one of Britain’s longest-running and most gripping crime dramas. The series follows a team of forensic pathologists and scientists who use their expertise to uncover the truth behind some of the most disturbing and complex crimes.

This season promises new mysteries, emotional twists, and intense investigations as the team once again faces the darkest sides of human behavior. With a mix of returning favorites and powerful guest stars, the cast of Silent Witness continues to elevate the series’ reputation for compelling performances and hard-hitting storytelling.

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Silent Witness Season 28 complete cast guide

1: Emilia Fox — Dr. Nikki Alexander / Nikki Alexander

Emilia Fox returns as Dr. Nikki Alexander, the brilliant forensic pathologist who has been the cornerstone of the series since 2004. Nikki is intelligent, empathetic, and deeply committed to uncovering the truth, often putting herself at risk in the pursuit of justice. Her leadership and insight continue to guide the team through the toughest of cases.

Fox’s long-standing role has become iconic, with her nuanced performance capturing both the professional resilience and emotional vulnerability of Nikki. Across her tenure, Emilia has developed Nikki into one of the most beloved and complex characters in British television, ensuring continuity and strength for the series into its 28th season.

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2: David Caves — Jack Hodgson

David Caves stars as Jack Hodgson, the skilled forensic scientist and investigator known for his dedication and sharp analytical mind. Jack’s loyalty to Nikki and his team is unwavering, and his practical approach to crime-solving balances out the emotional intensity of the cases they face. His character also provides a grounded, relatable perspective amidst the chaos of crime investigations.

Caves, who joined the cast in 2013, has become an integral part of Silent Witness. His portrayal of Jack blends toughness with warmth, allowing him to connect deeply with both his colleagues and the audience. His dynamic with Nikki has provided some of the show’s most engaging and heartfelt storylines.

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3: Maggie Steed — Harriet / Maggie

Maggie Steed appears in Season 28 as Harriet, also referred to as Maggie, a character who brings depth and complexity to the narrative. Known for her commanding presence, Harriet adds a new dimension to the series, either as an ally or as a figure whose intentions remain ambiguous.

Steed is a highly respected actress with a long career in theatre, film, and television. Her gravitas and experience ensure that any character she plays carries weight, and her role in Silent Witness adds dramatic intensity. Viewers can expect her performance to leave a lasting impression in Season 28.

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4: Francesca Mills — Kit

Francesca Mills joins the cast as Kit, a fresh and energetic addition to the team. Kit brings a sharp mind and a new perspective to forensic investigations, creating a dynamic contrast with the more experienced members of the group. Her character represents the next generation of forensic science, blending curiosity with determination.

Mills, known for her roles in Harlots and Pistol, is an actress celebrated for her versatility and screen presence. Her portrayal of Kit is expected to highlight both the challenges and rewards of working in such a demanding field, making her a standout among the newcomers to the series.

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5: Lasco Atkins — Policeman / Policeman at Lake

Lasco Atkins takes on the role of a Policeman, specifically noted as being at the lake in Season 28. While not a central character, his role emphasizes the importance of police collaboration with forensic teams during complex investigations. Policemen often serve as crucial connectors between crime scenes and the scientific analysis done by Nikki’s team.

Atkins has appeared in various productions, often cast in authoritative or supporting roles that enrich the realism of the story. His appearance in Silent Witness continues that trend, lending authenticity to the procedural aspects of the series and grounding the drama in real-world detail.

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6: Cal MacAninch — David Loader / David Whitley

Cal MacAninch portrays David Loader, also credited as David Whitley, a complex figure tied closely to one of Season 28’s cases. His character likely weaves between suspicion, secrecy, and emotional conflict, adding layers of intrigue to the narrative.

MacAninch, recognized for roles in Downton Abbey and Time, excels in playing multifaceted characters who operate in morally grey areas. His involvement in Silent Witness Season 28 ensures a gripping performance that will keep audiences guessing about his true role in the storyline.

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7: Robert Lonsdale — Alex / DC Gus Cook

Robert Lonsdale plays Alex, also credited as DC Gus Cook, a detective who becomes involved in one of the season’s central investigations. His role bridges the gap between the forensic team and active law enforcement, highlighting the collaborative process in solving crimes.

Lonsdale, known for Chewing Gum and Our Girl, brings energy and nuance to his performances. As DC Gus Cook, he provides both procedural insight and emotional depth, strengthening the storytelling by showing how police work and forensic science intertwine.

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8: Joe Absolom — Calvin / Kelvin Price

Joe Absolom stars as Calvin, also listed as Kelvin Price, a character who adds tension and drama to Season 28. His involvement in the story likely places him at the heart of a case, whether as a suspect, victim, or someone connected to the crime under investigation.

Absolom is a well-known actor with credits in EastEnders and A Confession. His ability to portray troubled and layered characters ensures that his performance in Silent Witness will be both compelling and memorable, driving the emotional weight of the season forward.

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9: Tamzin Outhwaite — Beth Gilston / Sally Alden

Tamzin Outhwaite joins Season 28 as Beth Gilston, also credited as Sally Alden, a character whose involvement in the storyline adds both intrigue and emotional intensity. Her character is expected to challenge or complicate the work of the forensic team, contributing to the drama.

Outhwaite, a familiar face from EastEnders and numerous stage and screen projects, is celebrated for her emotional depth and charisma. Her role in Silent Witness demonstrates her ability to handle high-stakes drama, ensuring she makes a strong impact in the series.

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10: Sean Pertwee — DI John Flynn

Sean Pertwee appears as DI John Flynn, a detective inspector deeply involved in one of the season’s cases. Flynn represents the law enforcement side of investigations, often working hand-in-hand with the pathologists to uncover the truth. His pragmatic approach contrasts with the team’s scientific methods, creating dramatic tension.

Pertwee, known for his iconic role in Gotham as Alfred Pennyworth, brings authority and gravitas to the role. His presence ensures that DI Flynn stands out as a formidable and memorable character in the season’s narrative arc.

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11: Lorcan Cranitch — Colin McGrath / DS Mansfield

Lorcan Cranitch stars as Colin McGrath, also known as DS Mansfield, a detective sergeant whose role ties closely to the season’s central mysteries. His character likely carries both authority and moral complexity, contributing to the suspense of the storyline.

Cranitch, an Irish actor acclaimed for roles in Shine and Bloodlands, excels in portraying layered, intense characters. His role in Silent Witness Season 28 reinforces the show’s commitment to bringing in strong guest performances that elevate the drama and keep viewers engaged.