The chilling thriller, The Girlfriend, is now streaming on Prime Video and follows the story of a devoted mum, Laura (portrayed by Robin Wright), whose world is thrown into chaos when she meets her son's new girlfriend.
Cherry (played by Olivia Cooke) seems harmless to her boyfriend Daniel (Laurie Davidson), but Laura's maternal instincts kick in and she sees right through Cherry's facade.
Laura instantly becomes suspicious of Cherry, who manages to charm and manipulate everyone else around her.
Viewers were left gripping their seats during the finale, wondering if there's more to the story.
Here's everything you need to know about the number of episodes in The Girlfriend, which boasts an impressive cast.
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Fans might be a bit gutted to learn that the series only consists of six episodes, all of which were released simultaneously on 10 September.
The narrative unfolds from two different viewpoints as both Laura and Cherry recount the events following their first encounter.
Laura begins to delve deeper into Cherry's private life, convinced she poses a threat to her beloved son Daniel.
However, she ends up alienating her entire family, leading her to question whether she's overthinking things.
The final episode, episode six, unveils who was right all along in a shocking sequence of events.
Prime Video hasn't confirmed whether there will be a second season yet, but the producer has hinted that there could be more to the story.
Producer Jonathan Cavendish spoke to Reach titles at the premiere, revealing his keenness to continue the storyline.
He said: "If people want a second one... episode six has what I'd like to think is a pretty decent cliffhanger.
"So, we originally thought 'No, we'll just make one'. Then, as we were going, we thought this is so good it would be a pity [to end it]."
Should viewers desire additional episodes, they'll need to wait and discover whether the programme gets commissioned for another series.
The Girlfriend airs on Prime Video
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