A Mother’s Son: Nicola Walker’s Forgotten Crime Drama Is Finding A New Audience On Netflix
Before Nicola Walker became synonymous with Unforgotten, she took on another detective role in a much darker story — one that places a grieving family at the centre of a teenage murder investigation.
A Mother’s Son, the two-part ITV crime drama from 2012, stars Walker as DC Sue Upton, the detective investigating the murder of a teenage schoolgirl in a quiet coastal town. The series is now available on Netflix UK, where it is giving new viewers a chance to discover the compact psychological thriller.
But the police investigation is only one side of the story. At the heart of the drama is a mother forced to consider the possibility that her own teenage son could be connected to the killing.

A Murder That Tears A Family Apart
The story begins when a teenage girl is found murdered, sending shockwaves through the close-knit community.
As DC Sue Upton and her colleagues work to establish what happened, suspicion begins to move dangerously close to the family of Rosie, played by Cold Feet star Hermione Norris.
Rosie discovers evidence that raises troubling questions about her son Jamie, played by Alexander Arnold. Among the most disturbing discoveries are bloodstained trainers that Jamie has hidden away.
Suddenly, Rosie faces an impossible choice: report what she has found and potentially hand her own child over to the police, or protect him and conceal what could be crucial evidence.
Netflix’s synopsis similarly describes a local shopkeeper who begins to suspect that her son may have been involved in the murder, while the series explores the psychological pressure placed on the family as the evidence mounts.

Nicola Walker In An Early Detective Role
For fans who know Walker primarily as DCI Cassie Stuart from Unforgotten, A Mother’s Son offers an opportunity to see the actress in another crime-investigation role.
Walker plays DC Sue Upton, working alongside DCI McCleish as the investigation develops. Her character is tasked with uncovering the truth, while Rosie is simultaneously struggling with a very different question: how far would a parent go to protect their child?
Walker is joined by a recognisable British cast. Martin Clunes plays Rosie’s husband Ben, while Paul McGann appears as David, Rosie’s former husband and Jamie’s father. Annabelle Apsion also stars as Kay Mullary.
Two Episodes, No Room For Filler
One of the drama’s defining features is its compact structure.
Originally broadcast on ITV on September 3 and 4, 2012, A Mother’s Son consists of just two episodes, each running for roughly 46 minutes.
That short format keeps the story tightly focused on the murder investigation and the increasingly fractured family relationships.
As suspicion grows around Jamie, Rosie becomes increasingly isolated. Her relationship with Ben comes under strain, while David becomes more involved after Rosie shares her concerns with him.
The investigation also takes detectives toward Sean Christie, a troubled dropout who has been associating with Jamie. But as the case develops, the family’s assumptions about what happened become increasingly difficult to trust.

From Crime Investigation To Psychological Dilemma
What separates A Mother’s Son from a conventional murder mystery is its focus on the emotional consequences of suspicion.
Rather than simply asking who killed the girl, the drama asks what happens when a parent begins to believe that the answer could be their own child.
The official production description frames the central conflict around a mother discovering evidence pointing towards her son and questioning whether she can accept that he might be capable of murder.
That approach also explains why the series has continued to attract attention from viewers looking for character-driven British crime dramas rather than sprawling investigations.
Viewers Praise Its Tense, Focused Story

The series has developed a modest following among viewers, with IMDb currently listing a 6.8/10 rating from more than 2,200 ratings.
Viewer reactions have highlighted the performances and the show’s stripped-back approach, with particular praise for the young actors alongside the established cast.
The drama has also drawn comparisons to Broadchurch, largely because of its coastal setting, close-knit community and murder investigation involving familiar British actors. However, viewers have noted that A Mother’s Son takes a more straightforward approach and unfolds over a much shorter runtime.
Critics were similarly positive about its tension. The Guardian described the drama as “tense, absorbing, thrilling,” while The Telegraph praised its psychological approach and the unease it could create for parents watching the story unfold.
A Different Side Of The Unforgotten Star
For viewers who discovered Nicola Walker through Unforgotten, The Split or Annika, A Mother’s Son offers a chance to revisit one of her earlier television roles.
It also comes from Chris Lang, the writer who would later create Unforgotten, making the connection between the two crime dramas particularly notable.
But unlike the long-running investigations of Unforgotten, this story is deliberately contained. In only two episodes, it takes a murder, a suspicious teenager and a family caught between love and suspicion and turns them into an intensely personal mystery.
And as Rosie gets closer to the truth, the most difficult question is no longer simply who committed the murder — but what a mother should do when she fears the answer may be her own son.
Where To Watch
A Mother’s Son is currently listed on Netflix UK, with both episodes available to stream. Netflix classifies the series as a British crime and mystery drama, while its catalogue lists Hermione Norris, Martin Clunes, Paul McGann and Nicola Walker among the cast.
With its short two-episode format, strong British cast and unsettling family dilemma, the series offers a compact crime drama for viewers who enjoy mysteries where the emotional stakes are just as important as solving the case.