“Identity Theft” starts with an office joke and ends with a journey nobody at the Park has authorised. Between those moments, a bombing and an apparent family tragedy force Slough House back into action. River’s anxiety about his grandfather becomes an immediate crisis, while the new people in charge of MI5 demonstrate that a change of leadership has hardly settled the institution’s problems. The title belongs to more than one deception: documents, appearances and professional authority all become unreliable guides to who somebody really is.
- Released
- 4 September 2024
- Runtime
- 43 minutes
- Source novel
- Spook Street
- Director
- Adam Randall
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Watch and read
Open the official programme page or explore the source novel.
Detailed plot
Reveal episode spoilers
Roddy Ho turns up at a chicken shop expecting a Christmas gathering. When he calls Louisa, he discovers that the invitation was a joke at his expense. He leaves with his food as an explosion strikes nearby. What began as another reminder of his isolation at Slough House has placed him close to a mass-casualty attack. The prank belongs to the office’s familiar cruelty; the violence behind it opens a case far beyond anything the team was expecting to deal with that evening.
The attack has hit Westacres shopping centre. At the Park, Diana Taverner works through the available evidence while new First Desk Claude Whelan struggles to supply the leadership his position requires. The suspected bomber used the name Robert Winters, but the investigation cannot establish a convincing ordinary life behind the paperwork. A recorded message threatens further violence from his brothers. Taverner needs to establish whether another attack is imminent, and Whelan’s unease gives her another problem to manage at the same time.
River meets Louisa for a drink and describes his grandfather’s deterioration. David has become frightened and confused, and River is struggling to accept how serious the change has become. Louisa urges him to go and see him. At David’s house, a visitor arrives claiming to be River and heads upstairs. David takes his shotgun and follows. Shots leave a body in the bathroom. The scene initially appears to turn River’s concern for David into the worst possible consequence of David’s decline.
Emma Flyte, the new head of the Dogs, calls Lamb to identify the dead man. A ruined face and River’s possessions appear to support the identification. Lamb confirms that the body is River and leaves Flyte with an apparently resolved question. Back at Slough House, Roddy passes on the news and begins appropriating River’s computer. The others have to absorb the apparent loss while the office’s least sensitive colleague treats it as an opportunity. Meanwhile, David is missing from the house and the investigation must account for him too.
The search connected to Winters leads officers into a flat containing apparently useful evidence, but the room is booby-trapped. An explosion turns a potential breakthrough into another deadly incident and exposes how little control MI5 has over the threat. Lamb visits Catherine, who has left the office after her confrontation with him. Her surprise at River’s supposed death fails to persuade him. He has worked out that River is alive and David is being sheltered with her. The final view of River travelling through France confirms that the identification was a cover story: he has already begun an investigation of his own.
Turning points
Reveal turning points
Lamb’s identification is the first important move the audience is invited to misread. He gives Flyte an answer, but that answer buys time for someone else. His manner remains deliberately hard to interpret: if he made his loyalty obvious, he would also make his intervention obvious. The deception therefore works through both the practical damage to the body and the familiar distance Lamb maintains from the people he protects.
River’s conversation with Louisa gives the bathroom scene its weight. The episode does not present David only as an old intelligence mystery waiting to be solved. River is trying to understand what he owes a man who raised him and can no longer be relied upon to recognise him. That responsibility continues underneath the operation. River can pursue an attacker, but successful fieldwork will not repair the relationship or restore David’s memory.
Whelan and Flyte offer two different versions of new management. One has the highest office and little command of the situation; the other arrives with clear questions and expects clear answers. Lamb frustrates Flyte because she is actively investigating, while Taverner has to compensate for Whelan because he is struggling to act. Rank, competence and useful knowledge sit in separate hands, leaving plenty of room for the case to develop outside the official chain of command.
Book vs show
Reveal book and television spoilers
The novel’s office conversation records forty-two children killed at Westacres; television reports twenty-three victims. The attack remains the opening catastrophe, but its toll and the emphasis on children change.
Herron begins with a tour through the office’s failing heating; the adaptation begins outdoors with Ho’s failed party invitation.
The novel introduces Marcus and Shirley through a waterboarding experiment; television foregrounds their gambling-related tensions.
Louisa talks about her new flat in the book’s office kitchen; her early television conversation with River takes place in a pub and concerns David.
Mick Herron, Spook Street (2017); publisher’s Slough House excerpt.
Characters and actors
The contrast between River’s loyalty and Roddy’s opportunism gives the office reaction its sharpest edge. Louisa treats a colleague’s anxiety as something requiring attention before anyone declares an emergency. Catherine becomes a trusted refuge outside the usual workplace, while Lamb recognises that refuge without asking for permission to enter it. David’s vulnerability unsettles the authority he once exercised; Flyte’s arrival introduces an investigator who has yet to learn how often Lamb’s apparent indifference conceals a decision.
Linked locations
Confirmed: Leather Lane supplies the chicken-shop opening. River and Louisa’s pub conversation was filmed at the Shaftesbury Tavern in Hornsey. Composite: Slough House combines its Aldersgate frontage, separate rear entrance and studio interiors. David’s house and Catherine’s flat provide the episode’s private refuges; the bathroom upstairs is a set.
Trivia
Saskia Reeves told TheWrap that she suggested Catherine’s empty weekly calendar, a small visual detail showing how little occupied her time after leaving the office.
Questions and answers
Is River really dead?
No. The ending reveals him alive in France. Lamb’s identification has supported a deception rather than announced River’s death.
Who replaces Nick Duffy?
Emma Flyte takes charge of the Dogs. Her first encounter with Lamb concerns the body found in David Cartwright’s bathroom.
What does the Westacres bomber promise?
His recorded message says that his brothers will be heard from. The threat turns the bombing into a warning about further violence.