Netflix has confirmed a major change to its upcoming crime thriller series: the project known until now as The Undertow has been renamed The Twin and its premiere has been delayed until January 1, 2027. The production, starring Jamie Dornan in a dual role alongside Mackenzie Davis, was originally scheduled for 2026, according to the Next on Netflix 2026 calendar released by the platform earlier this year.
The six-episode series follows a woman who, after a fatal accident that ends her husband's life, becomes entangled in a dangerous pact with his estranged twin brother. Below, we review everything known so far about The Twin.
When does The Twin premiere on Netflix?
According to the latest information confirmed by Netflix, The Twin will arrive on the platform on January 1, 2027, after having been initially announced for 2026 as part of the Next on Netflix calendar. This date change is a notable move for the platform, as Netflix UK typically reserves the coveted New Year's Day slot for its Harlan Coben adaptations, such as Fool Me Once and Stay Close.
What is The Twin about?
Netflix has slightly updated the official synopsis of the series, which describes the plot as follows: Nicola is suffocating in a loveless marriage with Adam, until their lives take a dramatic turn when Lee, Adam's long-estranged twin brother, returns unexpectedly. Their tangled romantic past threatens to destroy Nicola's present.
A split-second decision and a terrible accident push Nicola to protect her children. Over the course of a week, Lee and Nicola are forced to stay together, trying to maintain a complex web of secrets and lies. Although they cannot ignore their feelings for each other, both know they are living on borrowed time.
Confirmed cast of The Twin
Jamie Dornan plays twins Adam and Lee. The actor, known for his role as Christian Grey in the Fifty Shades franchise, has previously participated in several Netflix productions, including The Tourist, Heart of Stone, The Siege of Jadotville, and the former exclusive series The Fall.
Mackenzie Davis plays Nicola, Adam's wife. The actress has starred in notable science fiction titles such as Blade Runner 2049, Terminator: Dark Fate, Love, Death & Robots, and the Black Mirror episode titled San Junipero. She was also recently part of the Netflix horror series Below.
Iain de Caestecker plays Marty Munro and is known for his roles in The Winter King, The Control Room, and several seasons of Agents of SHIELD.
Gary Lewis plays Keith. The actor is recognized for his role as the father in Billy Elliot and as McGloin in Martin Scorsese's Gangs of New York.
The rest of the confirmed cast includes Thalia Dudek (The Running Man) as Kai; Noof Ousellam (Leave to Remain, Andor) as Daniel; Claire Brown (Andor) as Claire; Louise Burke (The People We Hate at the Wedding); Saskia Ashdown (Shetland, Washington Black) as Emma; Jayne McKenna (Grace, Shetland) as Margaret Ross; and Jess Chanliau (The Franchise, The Diplomat) as Camille.
Rounding out the cast are Melissa Kate Steven as Rebecca; Jenny Lee (Counsel, Dinosaur) as Jean; Darya Maria (Payback) as Ruby; Mabel Strachan (The Ridge) as Sophie Munro; Amy Louise Walker (Miss Pirie and Miss Woods) as Jess; Dawn Sievewright (Vigil) as Lauren Fraser; and Peter F Gardiner (Down Cemetery Road) as Andrew McMullin.
Also appearing are Kieran Moloney (The Ick) as Liam; Géraldine Chevalley (A Spy Among Friends) as nurse; James Watson (Perfect Sense); Claire Keppie (The Fall of Sir Douglas Weatherford) as Sandra Salmon; Hannah Visocchi (Dog Squad) as Steph; Issy MacDonald (Sisters) as Caitlin; Anthony Bradley (Because We Are Too Many) as Bradley; and Natasha Reid (Sealgair).
Origin of the story and creative team
The Twin is based on the Norwegian television series Twin, produced by Nordisk Film Production AS and starring Kristofer Hivju, an actor known for his role in Game of Thrones.
The series is directed by Jeremy Lovering (In Fear) and written by Sarah Dollard (Doctor Who), Hanna Jameson (author of The Last), Scout Cripps (Little Racer), Kam Odedra (Ackley Bridge), and Joy Wilkinson.
Nira Park and Rachael Prior serve as executive producers on behalf of the studio Complete Fiction, which was also responsible for the series Lockwood & Co. David Flynn and Paul Lee are executive producers for the studio Wiip. Jeremy Lovering, Jamie Dornan, and Sarah Dollard are also listed as executive producers, while Laura Richardson is credited as co-executive producer and Donald Mackinnon as producer.
Production status and filming
Filming for The Twin took place in May 2024, on locations in the Scottish Highlands, as well as on the islands of Sutherland and the Isle of Mull. According to available information, the series is currently in an advanced stage prior to its premiere.
How many episodes will The Twin have?
The Twin will consist of a total of 6 episodes, according to information confirmed by Netflix.
Frequently asked questions about The Twin
When does The Twin premiere on Netflix?
Netflix has confirmed that The Twin will premiere on January 1, 2027, after having been initially scheduled for 2026.
Why did The Twin change its title?
The series was originally known as The Undertow, but Netflix has confirmed that the final title of the project is now The Twin.
Who are the stars of The Twin?
Jamie Dornan plays twin brothers Adam and Lee, while Mackenzie Davis plays Nicola, Adam's wife.
What is The Twin based on?
The series is based on the Norwegian production Twin, from Nordisk Film Production AS, originally starring Kristofer Hivju.
How many episodes does The Twin have?
The series will have 6 episodes in total, as confirmed by Netflix.
Where was The Twin filmed?
Filming took place in May 2024 in the Scottish Highlands and on the islands of Sutherland and the Isle of Mull.
