Chapter 4 Summary: Monday, 17 June – The Birthday Twin Returns

⚠️ Spoiler Warning: This guide contains detailed spoilers for the entire novel. Proceed only if you've finished reading or are comfortable knowing the plot.

Summary

The chapter opens at Alix Summer’s home on the Monday after her husband Nathan’s second weekend bender. He acts as if nothing is wrong while Alix silently weighs the pros and cons of their marriage, feeling that the cons have grown heavy. After he leaves, she walks their children, Leon and Eliza, to Parkside Primary. At the school gate she is startled to find Josie Fair, the woman she met at the pub on her birthday. Josie says her daughters, now adults, attended the school years ago. Alix introduces herself and notices Josie’s small dog, Fred. When Alix tries to pet him, the dog shrinks away. Josie seems eager to talk about something “to do with us being birthday twins.” Despite Alix’s reluctance, Josie insists and eventually secures a promise that Alix will visit her at the alterations shop where she works, Stitch, near Kilburn tube station. Josie leaves without explaining what she wants.

The perspective then shifts to Josie’s evening. She works part-time at Stitch, hemming clothes and sewing fake-fur beards onto stag‑night T‑shirts. At home she finds her husband Walter at the dining table researching a Lake District holiday, complaining about prices. Josie considers using her “windfall” but Walter dislikes feeling ripped off. She prepares dinner – spaghetti and meatballs with chili – and later assembles baby‑food jars for her adult daughter Erin, who lives in her room with the door always shut, playing video games. Josie leaves the tray outside Erin’s room without knocking, knowing the empty jars will reappear later. She also searches online for her other daughter, Roxy, using the search term “Roxy Fair” with a “Past week” filter – a ritual she performs twice daily, though she suspects Roxy has changed her name.

Walter takes the dog out but claims it didn’t poop, though Josie knows he is lying and does not press him. They eat dinner in front of the TV, and at 10 p.m. Josie retrieves the empty baby-food jars, rinses them, and gets ready for bed. In bed she pretends to sleep. Half an hour later she feels Walter leave the bed, hears the creak of floorboards, and knows the bed is hers for the rest of the night.

The chapter ends with a transcript from a Netflix documentary series, Hi! I’m Your Birthday Twin! A young neighbor, Amy Jackson, describes Josie and Walter as “really kind of weird.” She reveals that the household was once loud with shouting and slamming doors, then “suddenly went really quiet.” When the interviewer asks “All this?”, Amy answers: “Yes. All this. All the killings. All the deaths.”

Key Events

Alix contemplates ending her marriage after Nathan’s second consecutive weekend bender.
Josie Fair approaches Alix at the school gate and arranges a meeting at her workplace.
Josie returns home to her husband Walter and their adult daughter Erin, who lives as a recluse in her room.
Josie prepares baby food for Erin and leaves it outside her door without interacting.
Josie performs her twice‑daily online search for her missing daughter Roxy, with no results.
Walter leaves the marital bed at night; Josie feigns sleep.
A documentary excerpt reveals that Josie and Walter’s household was once volatile and that a series of killings and deaths later occurred.

Character Development

Alix Summer: Her dissatisfaction with Nathan moves from vague discontent to a concrete tally of pros and cons, signalling a potential turning point in her marriage. Her guarded reaction to Josie’s persistence shows her instinct for self-protection.
Josie Fair: The chapter deepens her portrayal. She is outwardly compliant – at work, with Walter’s demands – but privately she carries a heavy burden of guilt and anxiety over both daughters. Her unwillingness to knock on Erin’s door suggests a pattern of avoidance. Her nightly ritual of pretending to sleep while Walter leaves hints at a troubled marriage.
Walter Fair: He comes across as controlling and dismissive – he refuses to pick up his dog’s waste, complains about holiday prices despite Josie’s windfall, and leaves the bed at night without explanation. His age and diminished appearance contrast with Josie’s memories of what he once was.
Erin Fair: Though absent, she is defined by her closed door, the squeaking gaming chair, and her diet of baby food – a symbol of arrested development or deliberate regression.
Roxy Fair: She is a ghost in the story, defined only by her disappearance and Josie’s fruitless searches.

Themes, Symbols, or Motifs

Double denim: Josie’s consistent denim clothing – skirt, jacket, handbag, even the dog’s collar – is noted by Alix and later by neighbor Amy, who nicknames her “Double Denim.” The motif suggests a desire to control her outward identity or to cling to a fixed persona.
Baby food for an adult: The jars of pureed food left for Erin represent a stunted mother‑daughter relationship, one in which caregiving has become a mechanical, guilt‑ridden chore rather than an emotional connection.
The empty search: Josie’s twice-daily Google search for “Roxy Fair” underscores her unresolved loss and refusal to give up hope, even as she knows the search is futile.
Documentary frame: The sudden shift to a Netflix documentary transcript breaks the realistic narration and reveals that the entire story is being revisited after violent events. This meta‑device plants the knowledge that deaths will occur, creating dramatic irony.

Why This Chapter Matters

Chapter 4 is a pivot point. It expands the two women’s connection beyond a chance pub meeting and simultaneously exposes the stark contrast between Alix’s outwardly normal family life and the dysfunction inside Josie’s home. The documentary excerpt confirms that the narrative is a retrospective true‑crime account, raising the stakes for every subsequent interaction. It also introduces the motif of hidden secrets, both in Josie’s household and in Alix’s faltering marriage, setting up the mystery that will drive the rest of the novel.

Study Questions and Answers

1. Why does Alix agree to meet Josie at her workplace despite her reluctance? Alix is initially evasive, claiming a busy week. But Josie’s tearful, desperate tone and her hand on Alix’s arm compel Alix to give in. Alix likely feels a mix of pity, curiosity, and social pressure; she also senses that Josie’s request is urgent, though she does not know why.

2. What does the baby‑food detail reveal about Josie and Erin’s relationship? Erin, an adult woman, eats only pureed baby food – a diet that suggests extreme dependency or a refusal to engage with normal adult life. Josie prepares and leaves the jars without knocking, indicating a boundary that neither mother nor daughter crosses. The food is both a lifeline and a symbol of how their relationship has regressed to an infant‑caregiver dynamic.

3. How does the documentary transcript at the end alter the reader’s understanding of the chapter? Until the transcript, the story appears to be a domestic drama with undertones of suspense. The mention of “all the killings, all the deaths” retroactively turns the mundane details – Alix’s marital doubts, Josie’s daily routine – into possible clues or red herrings within a larger true‑crime investigation. It warns that normalcy is deceptive and that violence will eventually surface.