Monica Johnson Character Analysis
Overview
Monica Johnson appears first as Abby Adler’s seemingly selfless assistant, then becomes the novel’s primary antagonist. Her generous offer to act as a surrogate for Abby and her husband Sam masks a years‑long obsession with Sam and a history of dangerous behavior. Freida McFadden slowly peels back Monica’s lies, revealing a calculating individual who will do anything to possess the man she believes she loves.
Plot Role
Monica is the engine of the thriller’s central conflict. She inserts herself into Abby and Sam’s marriage by volunteering to carry their child, a proposal that Abby eagerly accepts despite warnings from her friend Shelley. As the story unfolds, Monica:
- Falsifies her background (fake mother “Jean Johnson,” fake roommate “Chelsea Williams”) to gain trust.
- Drugs Abby’s coffee to produce a false‑positive meth test at work, leading to Abby’s firing.
- Plants a bottle of Adderall in her own cubicle to frame herself as the victim.
- Manipulates Abby’s calendar and leaves a threatening email from Abby’s account to Denise Holt.
- Murders Denise Holt and frames Abby using a letter opener engraved with Abby’s name.
- Ultimately holds Sam and Abby at gunpoint, resulting in the death of Monica’s roommate Gertie and a self‑inflicted gunshot that leaves Monica in a permanent vegetative state.
Her actions drive the narrative from a domestic drama into a full‑blown psychological thriller and frame‑up mystery.
Motivations and Traits Shown Through Actions
Freida McFadden indicates Monica’s actions are shaped by a diagnosed condition—her real mother Louise reveals Monica has severe borderline personality disorder and a genius‑level IQ. The text suggests this combination makes her exceptionally skilled at manipulation while also consumed by obsessive attachments. Key traits:
- Calculating intelligence: She orchestrates an elaborate scheme—fake references, tampered evidence, and a staged murder—showing advanced planning.
- Emotional instability: Her mother describes her as “crazy” and recounts a history of paranoid accusations against roommates. Monica herself accuses others of theft and noise violations.
- Possessiveness: Monica is obsessed with Sam. She had an affair with him while his student three years before the novel’s events, and when he rejected her, she engineered surrogacy to stay close.
- Duplicity: She presents a wholesome, helpful image (buttoned‑up clothing, avoiding alcohol to appear responsible) while secretly drugging, framing, and killing.
Interpretation: Monica’s “helpful” persona is not genuine altruism but a controlled performance. Her willingness to destroy Abby’s life—and even kill—to possess Sam suggests a pathological inability to accept rejection.
Chronological Arc
- Pre‑novel: Monica is a student in Sam Adler’s math class at a university in New York. She begins an affair with him; her mother Louise confirms this relationship. Sam ends the affair, but Monica remains obsessed.
- Year before the main story: Monica applies for a job as Abby’s assistant at the advertising agency. She cultivates a close relationship with Abby, who is desperate for a child after failed fertility treatments and an adoptive birth‑mother who backed out. Monica offers to be a surrogate.
- Act One (Chapters 1–10): Monica charms Abby and Sam during their interview dinner. She passes Sam’s preliminary checks by using a fake mother (claiming to be “Jean Johnson”) and a fake roommate (“Chelsea”). She becomes pregnant via artificial insemination with Sam’s sperm.
- Act Two (Chapters 11–28): Cracks appear. Monica contradicts herself (e.g., on Quentin Tarantino). She grows emotionally attached to the pregnancy, recording the heartbeat without Abby’s consent. She takes over Abby’s work projects, ingratiates herself with boss Denise Holt, and eventually drugs Abby to cause her firing.
- Act Three (Chapters 29–43): Monica frames Abby for Denise’s murder. Abby investigates and learns the truth from Monica’s real mother, Louise. Monica holds the couple at gunpoint; after a struggle, her roommate Gertie is shot. Monica shoots herself but survives in a vegetative state. The epilogue reveals she lives but cannot harm anyone again.
Relationships
- Abby Adler: Monica presents as a devoted assistant and friend, but the relationship is founded on deception. Abby trusts her completely until the evidence becomes overwhelming. Monica’s betrayal is total—she tries to destroy Abby’s career, marriage, and freedom.
- Sam Adler: The object of Monica’s obsession. Their affair three years earlier ended when Sam returned to his marriage. Monica cannot accept this; her surrogacy plan is a way to stay connected. In the climax, Sam declares he chooses Abby, which triggers Monica’s violent breakdown.
- Denise Holt: Abby’s demanding boss. Monica cultivates Denise as an ally after Abby is fired, but later murders Denise to frame Abby. The murder demonstrates Monica’s willingness to sacrifice anyone who stands in her way.
- Her mother Louise Johnson: Estranged. Louise is horrified by Monica’s behavior, revealing the history of mental illness, the suspicious drowning death of a high school friend (Sandy), and the affair with Sam. Louise warns Abby that Monica is dangerous.
- Gertie: Monica’s roommate at the time of the climax. Gertie appears loyal to Monica but dies accidentally during the shootout.
Key Decisions and Consequences
| Decision | Consequence |
|---|---|
| Offering to be a surrogate | Gains access to Sam and Abby’s private lives; becomes pregnant with Sam’s child. |
| Drugging Abby’s coffee | Gets Abby fired from Stewart Advertising, providing a motive for Denise’s murder framing. |
| Murdering Denise Holt | Places Abby under suspicion for first‑degree murder; nearly destroys Abby’s life. |
| Forcing a confrontation at gunpoint | Leads to Gertie’s death, Monica’s own self‑inflicted wound, and permanent brain damage. |
| Leaving a childhood blanket with David | In the epilogue, the scent of Monica’s perfume on the blanket unsettles Abby and suggests Monica’s influence cannot be erased. |
Theme and Symbol Connections
- Betrayal and Deception (see theme page): Monica’s entire relationship with Abby is a lie. She uses Abby’s vulnerability to infiltrate her life.
- Infertility and Motherhood (see theme page): Abby’s desperation for a child makes her blind to Monica’s red flags. Monica weaponizes the role of “mother” by carrying the child and later by leaving the blanket.
- Trust and Paranoia (see theme page): Abby trusts Monica despite warnings from Shelley and her own mother. The narrative shows how misplaced trust can destroy a life.
- Obsession and Manipulation (see theme page): Monica’s obsession with Sam drives every action, from the affair to the murder plot. Her manipulation is precise and patient.
- Gaslighting and False Accusation (see theme page): Monica gaslights Abby by denying obvious inconsistencies and by making Abby question her own memory (e.g., the contradictory Tarantino comments). She also falsely accuses Abby of drug use and murder.
- Symbol of the blanket: The blanket represents Monica’s lasting psychological hold. David, the child she carried, clings to it, implying that Monica’s legacy—both genetic and emotional—cannot be discarded.
Book‑Specific Questions and Answers
1. Why does Monica offer to be a surrogate for Abby?
Monica’s offer is not altruistic; it is a calculated move to remain close to Sam, with whom she had an affair three years earlier. Abby’s trust and Sam’s reluctant agreement give Monica access to their marriage and a chance to carry Sam’s child. Her real mother confirms Monica was obsessed with Sam and never got over him.
2. What evidence suggests Monica has a history of violence before the novel’s events?
Monica’s mother Louise reveals that when Monica was a teenager, her best friend Sandy died under suspicious circumstances—found floating in the Charles River. The police questioned Monica but could not prove involvement. Additionally, former roommates describe finding a sharpened broomstick stake under Monica’s bed and suspecting she had killed a boyfriend after a fight (a smell of rot followed his disappearance).
3. How does Monica frame Abby for Denise Holt’s murder?
Monica uses a letter opener engraved with Abby’s name as the murder weapon, leaves it covered in blood at the scene. She also sends a threatening email from Abby’s work account to Denise, which Detective Sweeney presents as motive. The police build a strong circumstantial case that nearly results in Abby’s arrest.
4. What mental health condition does Monica have, and how does it affect her behavior?
Louise Johnson states that psychiatrists diagnosed Monica with severe borderline personality disorder and note a genius‑level IQ. The disorder explains her intense attachment to Sam, her paranoid accusations of roommates, her inability to regulate emotions, and her extreme reactions to rejection. Her intelligence makes her schemes more dangerous and harder to detect.
5. What is the significance of the childhood blanket Monica leaves for David?
The blanket symbolizes Monica’s unbreakable presence. Even in a vegetative state, her scent lingers on the fabric. David, the baby she carried, demands the blanket and buries his face in it. The epilogue leaves the reader unsettled because it implies that Monica’s impact—and perhaps her darkness—cannot be fully erased from the family she tried to destroy. For further exploration, see the ending explained and questions and answers.
For more on the novel’s broader themes, visit the book page.