Prime Video’s six-part drama The Girlfriend concludes with a grim reversal: a violent struggle in the Sandersons’ indoor pool leaves Laura Sanderson, played by Robin Wright, dead and her son Daniel, played by Laurie Davidson, the unwitting agent of her drowning.
The finale resolves a season-long spiral of suspicion, manipulation and retaliation that began when Daniel introduced his new girlfriend, Cherry Laine (Olivia Cooke), to his parents. Laura, a gallery owner who had raised Daniel as an only child after the death of his sister, became convinced early on that Cherry concealed a dangerous past. Her efforts to expose Cherry and protect her son culminate in a chain of events that destroys the family’s equilibrium.
From the first family dinner, Laura’s suspicions are grounded in concrete incidents: Cherry taking a bracelet from Laura’s room, Laura’s cat Moses being pushed out a bathroom window, and a public altercation in which Laura sees Cherry punch a man on the street. Laura later identifies the same man in a viral wedding video showing a groom splattered with blood, and she finds a disturbing tableau that connects Cherry to a lamb’s heart and a wedding-caterer disguise shown in the opening episode.
Laura’s mistrust deepens when routine checks unravel Cherry’s personal history. Cherry claims to have attended St. Florian’s, but Laura learns the school has no record of her. A former boyfriend warns Laura he obtained a restraining order against Cherry and feared for his safety. Daniel rebukes his mother for meddling, and Howard Sanderson (Waleed Zuaiter), Daniel’s father, accuses Laura of resenting the newcomer for replacing her role in their son’s life.
Tensions escalate after a rock-climbing accident in which Daniel is badly injured. Laura capitalizes on the crisis: she lies to Cherry, telling her Daniel is dead and staging a private “funeral” to push Cherry away while Daniel recuperates at the family’s home in Spain. When that ruse fails, Laura resorts to more aggressive sabotage, hacking Cherry’s social account to get her fired. Cherry responds in kind, staging a public confrontation at one of Laura’s gallery events that ends with Cherry slashing a glass against her own head and accusing Laura of assault.
Laura’s campaign culminates in a late discovery: a piece of mail addressed to Cherry contains an invoice from a nursing home. The paper trail leads Laura to a resident, John Laine (Simon Meacock), and to Cherry’s mother, Tracey Laine (Karen Henthorn), who runs a local butcher shop. In a secretly recorded exchange, Tracey warns Laura to watch her back, saying Cherry can be vengeful. Laura uses the recording as evidence that Cherry will retaliate.
That retaliation comes swiftly. While Laura pursues the recorded confrontation and calls the police after Cherry vandalizes several paintings in Laura’s gallery, Cherry is arrested at Daniel and Cherry’s engagement party. Daniel confronts his mother, declaring that he will marry Cherry despite Laura’s interference. Laura agrees to make farewell drinks and slips pills into Daniel’s cocktail, drugging him into a stupor for hours.
Cherry is freed from custody and returns to the Sanderson house. A violent chase ensues: Laura follows Cherry through the house and into the indoor pool area with a knife. The three wrestle in the water; Daniel, fighting to restrain his mother, pushes her underwater. Laura drowns. The show treats this as a damning reversal of Laura’s earlier deception — when she told Cherry Daniel had died — and it leaves the family irrevocably altered.
In the closing moments, Daniel finds Laura’s lost phone under an end table. When he recharges it and plays back the last photos and the recording of Tracey’s warning, he hears Tracey say, “she’ll want something you’re not prepared to give, then she’ll find a way to get rid of you.” The episode ends on Daniel’s stunned expression as Cherry, visibly pregnant, and Howard socialize outside, and Moses the cat paws at the uncovered phone.
The Girlfriend, adapted from Michelle Frances’s novel, premiered Sept. 10 on Prime Video and spans six episodes that explore class tensions, maternal possessiveness and the corrosive effects of suspicion in an upper-middle-class London family. The series positions Laura as both protector and antagonist: a devoted mother who becomes increasingly unscrupulous in pursuit of what she believes is the truth. Critics and viewers have noted that the show keeps moral lines deliberately blurred, offering scenes in which Cherry’s behavior is menacing while Laura’s tactics grow more extreme and self-destructive.
Throughout the series Laura’s investigation produces a mixture of corroborating and ambiguous evidence: missing school records, a restraining order obtained by an ex, and violent outbursts by Cherry. At the same time, Laura’s own betrayals — lying about Daniel’s death, hacking social media and drugging her son — escalate the stakes and complicate viewers’ judgment. The finale’s final audio clip adds a late note of ambiguity by repeating a warning about Cherry’s potential for retribution, leaving open the question of which actions drove the fatal outcome.
The Girlfriend closes on that unresolved note, resolving the immediate physical crisis while leaving the audience with the moral and psychological consequences of the characters’ actions. The show’s ending reframes Laura’s vigilance as both prescient and ruinous, and it positions Daniel and Cherry at the center of a new, precarious chapter following the funeral of a relationship and the death of a mother.
Olivia Cooke, Robin Wright and Laurie Davidson lead the principal cast, supported by Waleed Zuaiter, Anna Chancellor and Karen Henthorn. The series remains faithful to Frances’s novel in its compact arc and its focus on the intimate violence of distrust, while using the visual medium to heighten the physical stakes that culminate in the poolside confrontation.