Laura Sanderson has the perfect life: a successful career, a loving husband, and a brilliant son she adores. But this carefully constructed world begins to fracture when her son, Daniel, brings home his new girlfriend, Cherry. What begins as a mother’s natural skepticism soon twists into a chilling certainty that something is deeply wrong. The Girlfriend is a masterclass in psychological suspense, exploring the fine line between protective love and dangerous obsession.

This gripping limited series features a powerhouse cast led by two of the most compelling actresses working today. They navigate a complex web of suspicion, gaslighting, and escalating tension, leaving the audience to question every glance, every word, and every character’s motive until the very last moment.

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The Girlfriend entire cast

1- Robin Wright as LAURA SANDERSON

Robin Wright, an icon of steely grace and formidable presence (House of Cards, Wonder Woman), is perfectly cast as Laura Sanderson. Wright masterfully portrays a woman whose razor-sharp intuition—once the key to her success—becomes her possible undoing. Her performance captures the gradual unraveling of a controlled persona, as her investigative zeal curdles into single-minded fixation, alienating everyone she loves.

Wright’s genius is in her ability to maintain a sliver of doubt. Is Laura a canny woman uncovering a sinister plot, or is she a privileged mother unable to let go of her son, fabricating a monster to keep him close? Wright ensures we see both the fierce, relatable protector and the unhinged, potentially unreliable narrator, making her journey utterly captivating and deeply unsettling.

2- Olivia Cooke as CHERRY LAINE

Olivia Cooke (Slow Horses, House of the Dragon) delivers a career-defining performance as Cherry Laine, the enigmatic girlfriend at the eye of the storm. Cooke is a master of ambiguity, and she uses that skill to breathtaking effect here. Her Cherry can be read in every scene as either perfectly sweet and misunderstood or as subtly manipulative and chillingly calculating.

Cooke’s portrayal is the key to the series’ suspense. A slight smile, a seemingly innocent glance held a moment too long, a perfectly timed tear—every micro-expression is a potential clue or a red herring. She is the mirror in which Laura sees her own paranoia reflected, and Cooke ensures that reflection is endlessly shifting and deeply disturbing.

3- Laurie Davidson as DANIEL SANDERSON

Laurie Davidson (Guilty Party, Willow) brings depth and vulnerability to Daniel Sanderson, the son caught in the crossfire. Davidson portrays the heartbreak of a young man torn between the two most important women in his life. His struggle is central to the tension: is he blindly in love and being manipulated, or is he rightly defending his girlfriend from his mother’s escalating and unwarranted attacks?

Davidson’s performance makes Daniel more than just a prize to be won. He embodies the collateral damage of Laura’s crusade, his trust and his family bonds fraying under the pressure. His journey from a devoted son to a frustrated, independent man trying to escape the smothering weight of suspicion is heartbreaking to watch.

4- Waleed Zuaiter as HOWARD SANDERSON

Waleed Zuaiter (Ramy, Colin in Black & White) plays Howard, Laura’s husband and Daniel’s father. Initially a voice of reason, Howard becomes increasingly frustrated and alarmed by his wife’s behavior. Zuaiter brings a grounded, empathetic presence, representing the audience’s initial perspective before he, too, is drawn into the doubt and confusion.

5- Naomi Sheldon as HARRIET BANCROFT & Simon Meacock as JOHN LAINE

Naomi Sheldon is Harriet, likely Laura’s confidante or sister, a sounding board who may either enable her fears or try to pull her back from the brink. Simon Meacock plays John Laine, almost certainly Cherry’s father. His presence introduces a new dynamic, forcing Laura to confront the family from which Cherry came and potentially uncovering the truth about her past.

6- Tanya Moodie & Shalom Brune-Franklin as the RUSSELL-BAILEYS

The formidable Tanya Moodie (The Sandman, Silent Witness) and Shalom Brune-Franklin (The Tourist, Line of Duty) play Isabella and Brigitte Russell-Bailey. This mother-daughter duo likely represents an external social circle or a family with their own connection to Cherry, perhaps holding secrets that could validate or dismantle Laura’s entire theory.

7- Francesca Corney as MILLIE DE POLIGNAC & Leo Suter as NICHOLAS HALE

Francesca Corney appears as Millie De Polignac, a character with a aristocratic name suggesting old money and hidden skeletons. She could be a figure from Cherry’s past or a socialite in Laura’s world who becomes an unwitting pawn. Leo Suter (Vikings: Valhalla, The Gentlemen) plays Nicholas Hale, a potential old flame of Cherry’s or a friend of Daniel’s whose presence introduces jealousy and complicates the narrative further.

Trust no one. Question everything. The mystery begins on Prime Video, September 10, 2025.