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It has all the big names attached, from Hugh Grant to Nicole Kidman, and Donald Sutherland, as well as writer David E. Kelley who wrote Big Little Lies and Director Susanne Bier who is known for Bird Box and The Night Manager.
The second teaser that's just landed continues to show Grace Sachs (Nicole Kidman) in a bad place.
Despite seemingly having the perfect life with devoted husband Jonathan (Hugh Grant), when a violent death takes place in the community, everything seems to change and Grace is left questioning everything.
She's now being hounded by police officers who swarm around her Upper East Side New York home.
Is she top of their suspect list, or do they think she's an accessory to murder? Either way her life looks like it's unravelling fast, judging by the second trailer.
We hear her say "I'll fix this" but also tearing up her own home in anger, with her son commenting "mum, you're acting strange".
Meanwhile adding further intrigue, we hear Jonathan say: "'There are moments when we can just lose ourselves, but it doesn't undo who we are in our entirety".
Based on bestselling book You Should Have Known by Jean Hanff Korelitz, we think we're in for a treat with this series that sees Hugh in a very different role to what we've ever seen previously.
It sounds very Big Little Lies-esque with an elite family being surrounded by a murder investigation, especially with Nicole and David on board.
But as the trailer rolls towards the end, we see a body lying in the grass and it looks suspiciously like Grace's, with her flowing red locks. It could of course be the original victim, but it looks a lot like Nicole Kidman sprawled on the floor.
Plus, it looks like her husband is racing into a hospital as the trailer comes to its conclusion. Interesting...
Mark your diaries people, this looks set to be a mystery-shrouded six-part series that'll hook us straight in.
The Undoing will land on Sky Atlantic on 18th March.
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