BBC One and HBO Max drama The Girl Before follows two women with "unnerving" similarities, played by Loki star Gugu Mbatha-Raw and Jessica Plummer.

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The upcoming psychological four-part thriller, announced in March this year, also stars David Oyelowo as a visionary architect who designs the strange house both women live in, three years apart.

Based on JP Delaney's 2018 bestseller of the same name, it is a twist-filled limited series has a woman questioning whether living in an impressive building with restrictive rules is worth the price - especially after finding out more about the mysterious events that happened prior to her arrival.

The official plot synopsis from the BBC reads: "The Girl Before tells the story of Jane (Gugu Mbatha-Raw), who gets the chance to move into a beautiful, ultra-minimalist house designed by an enigmatic architect (David Oyelowo).

"There’s just one catch: the occupants must abide by his list of exacting rules. Jane starts to feel the house changing her in unexpected ways, but when she makes the shocking discovery about her predecessor, Emma (Jessica Plummer), she’s forced to confront unnerving similarities. As the two women’s timelines interweave, Jane begins to question if her fate will be the same as the girl before…"

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Here's all we know about the series so far.

The Girl Before release date

The Girl Before premieres on BBC One and BBC iPlayer at 9pm on Sunday, 19th December, 2021.

The entire series will be available on BBC iPlayer following the broadcast of the first episode.

The limited drama series consists of four hour-long episodes and will air on consecutive nights.

The final episode will therefore be broadcast on BBC One on Wednesday, 22nd December, 2021.

The Girl Before trailer

You can get a taste of what to expect from The Girl Before by watching the trailer (which dropped on 3rd December) below – but be warned, it's seriously creepy!

The Girl Before cast

There's an impressive list of names in The Girl Before cast, headed up by Gugu-Mbatha Raw and David Oyelowo.

Mbatha-Raw, known for her performances in films such as A Wrinkle In Time, Misbehaviour, Belle and Beyond The Lights, will play Jane, while Emmy nominee Oyelowo will take the role of architect Edward.

On her involvement in the show, Mbatha-Raw says: "I'm so excited to work with this amazing team on such a compelling story in my debut role as actor/producer."

Similarly, Oyelowo is equally looking forward to working on The Girl Before, explaining: "This story is mind-bending in its clever construction and intricacy. I can’t wait to see it, let alone be in it. Plus, I’d go anywhere to work with my friend Gugu again."

the girl before
Jessica Plummer with David Oyelowo in The Girl Before

The most recent addition to the cast is Jessica Plummer, who'll star as Emma - the titular 'girl before'. Fresh from EastEnders and I'm A Celebrity...Get Me Out Of Here, Plummer will portray the fun-loving and confident character, who's stuck working at an unfulfilling marketing job, and is less than satisfied with her partner.

Her tagline states: "For her, One Folgate Street’s stone walls represent security, safety and renewal. But Emma is hiding a dark secret and, living in the pressure cooker that is One Folgate Street, the truth will out in the end."

Fellow EastEnders alum Ben Hardy has also signed onto the project to play Emma's partner, Simon. From what we know so far, he's besotted with Emma and counts himself lucky to have her. Unfortunately, he worries he’s not enough for her, and living in the minimalist haven of One Folgate Street heightens his insecurities even more.

What is The Girl Before about?

The Girl Before
Gugu Mbatha-Raw in The Girl Before BBC

With the housing crisis a constant feature in the news, many people will be able to relate to the main character Jane jumping at the chance to move into a beautiful, starkly modern house.

Described as a minimalist haven, One Folgate Street is the creation of visionary designer Edward Monkford.

There’s just one catch: in order to stay in the house, occupants must abide by his list of exacting rules. Jane starts to feel the house changing her in unexpected ways, but when she makes the shocking discovery that her predecessor died in the house three years earlier, she’s forced to confront unnerving similarities in their situations.

As the two women’s timelines interweave, Jane begins to question if her fate will be the same as the girl before.

If you want more details, you can read our The Girl Before review or our The Girl Before ending explainer.

Who else is involved in The Girl Before?

As well as having written the book on which the series is based, JP Delaney serves as creator, writer and executive producer of the show.

Marissa Lestrade (White Stork, Deep State 2) will co-write episodes of the series and Emmy-nominated Lisa Brühlmann (Killing Eve, Servant, Blue My Mind) will direct.

The Girl Before premieres on BBC One and BBC iPlayer at 9pm on Sunday, 19th December, 2021.

While you're waiting, take a look at our other Drama coverage, or find out what else is on with our TV guide.

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