Blood on Her Tongue – Chapter 20 Summary & Analysis
⚠️ 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
Still smarting from her twin’s accusations, Lucy storms into the woods, slashing at ferns and working herself into a fury. She mentally catalogues every sacrifice she has made for Sarah—holding her hair while she vomited during pregnancy, sewing baby clothes, always putting her first. Then the truth intrudes: Lucy has been Michael’s mistress, a secret Sarah does not suspect. The argument, Lucy admits, stems from Michael’s arrival in their lives; before him the twins rarely fought. A violent storm descends, flooding the grounds, trapping Mrs. van Dijk at Zwartwater. For two days Lucy locks herself in her room, refusing to speak to anyone. On the third day Katje, pale and showing fresh bite marks, faints outside Lucy’s door. Katje admits she has been letting Not-Sarah feed from her. She begs for help, but Lucy insists a murder is too logistically risky. Suddenly Pasja begins barking hysterically. Katje reveals she left Not-Sarah alone with Mrs. van Dijk. Lucy rushes to the room. The smell of an abattoir hits her. Pasja breaks her collar and bolts inside. The room is wrecked: ink spilled, diaries trampled, bloody paw prints. Not-Sarah perches on the headboard, mouth smeared with blood, one hand mangled—but the fingers are not her own.
Key Events
- Lucy’s angry walk through the woods, breaking branches and reflecting on her twin’s accusations.
- Revelation that Lucy was Michael’s mistress; she admits the affair was a choice, not an accident.
- A violent storm floods the land, making roads impassable and forcing Mrs. van Dijk to stay.
- Lucy spends two days in her room, refusing to speak to her twin or Michael.
- Katje faints; Lucy notices fresh bite marks and forces Katje to admit she has been feeding Not-Sarah.
- Katje begs Lucy to help her keep Not-Sarah alive; Lucy counters that a good murder is logistically complicated.
- Pasja’s manic barking alerts Lucy that something has gone wrong.
- Katje confesses she left Not-Sarah alone with Mrs. van Dijk.
- Lucy enters the room and finds carnage: ink, blood, a broken dog collar, and Not-Sarah on the headboard with a mangled hand that is not her own.
Character Development
Lucy spends much of the chapter in self-justification, but the narrative forces her to confront her hypocrisy. She resents her twin for marrying Michael, yet she voluntarily became Michael’s mistress. She claims she would kill anyone who hurt Sarah, but balks at the practical reality of murder. Her admission that “spineless … rotten and selfish” fits her shows a rare moment of self-awareness, though she quickly retreats into blame.
Katje transforms from a passive helper to an active supplicant. She has been feeding Not-Sarah in secret, physically weakening herself. Her faint demonstrates the cost of her loyalty. She apologizes for leaving Mrs. van Dijk alone, revealing both her naivety and her desperation.
Not-Sarah appears only briefly, but the image of her perched on the headboard, blood on her mouth, with another person’s fingers mangled in her hand, crystallises her as a predator beyond Lucy’s control. The cracked porcelain tooth hints that her human disguise is breaking down.
Michael is dismissive and patriarchal: he tells Lucy women fighting “fouls up a house’s atmosphere” and orders them to make amends. He understands nothing of the supernatural horror unfolding.
Themes, Symbols & Motifs
The abattoir smell marks the moment the story shifts from Gothic domestic tension to outright horror. It is the smell of death, of bodies treated as meat, and it signals that Not-Sarah has crossed a line Lucy cannot uncross.
The storm externalises the emotional turmoil inside Zwartwater. It traps everyone together, forcing the confrontation. The uprooted trees, “their roots washed clean,” evoke Lucy’s own uprooted certainties.
The broken pen Lucy uses to double-stroke her diary entries is a subtle symbol of twinning—each word split, as she and her twin are split. It recalls the bond that is now fracturing beyond repair.
Mangled fingers that are not Not-Sarah’s own suggest that she has consumed or dismembered part of Mrs. van Dijk. The body horror underlines the theme that helping a predator inevitably makes one complicit in predation.
The motif of eating and being eaten runs through Katje’s dialogue: “You want her to drain you? … then eat you up?” and Lucy’s reply, “Dying for someone is easy. If you really want to help her, stay alive.” This reframes sacrifice as the harder, more responsible path.
Why This Chapter Matters
Chapter 20 is the point of no return. Until now, the threat posed by Not-Sarah was largely psychological and implied. Here, the violence becomes explicit: a body is being consumed, and Lucy must decide whether to become an accessory to murder. The chapter also forces Lucy to admit her secret affair and her own selfishness, making her an unreliable narrator whose guilt complicates her judgment. The storm, the flood, the trapped guests, and the failed attempts at communication all compress the action into a desperate countdown. The final scene—Not-Sarah with another person’s fingers in her hand—leaves no doubt that the monster is no longer just a metaphysical concept.
Study Questions & Answers
1. What does Lucy’s reflection on Michael reveal about her character, and why is it significant for the plot?
Lucy admits she became Michael’s mistress partly to “know what it was like” and to be like Sarah, and partly because she wanted Michael to prefer her over her twin. This revelation shows that Lucy’s resentment is rooted in her own choices, not just Sarah’s actions. It makes her an unreliable narrator and complicates the moral calculus of helping Not-Sarah.
2. Why does Katje faint when she arrives at Lucy’s door?
Katje has been letting Not-Sarah feed from her repeatedly, leaving her pale, weak, and with a dangerously fast pulse. The faint is a physical consequence of her voluntary blood loss, and it underscores how far she will go to keep Not-Sarah alive. It also leads directly to the revelation that she left Not-Sarah alone with Mrs. van Dijk.
3. What is the significance of the smell of the abattoir in the final scene?
The smell is a sensory shorthand for death and dismemberment. It transforms the private, domestic horror of Not-Sarah’s hunger into a public, visceral reality. By associating the room with a slaughterhouse, the novel signals that Mrs. van Dijk has been butchered, not merely killed, and that Lucy is now standing in the aftermath of a literal feeding.