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The Undoing: Who killed Elena in the thriller starring Nicole Kidman, Hugh Grant?

The thrilling mini-series is available to watch on HBO in the US, and NOW TV and Sky Atlantic in the UK

nicole kidman the undoing
Hanna Fillingham
US Managing Editor
October 26, 2020
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Nicole Kidman and Hugh Grant play husband and wife Grace and Jonathan Fraser in The Undoing, which was released in the US over the weekend, and in the UK on Monday.

MORE: Nicole Kidman's daughters have roles in The Undoing - details

The star-studded show features an impressive cast, including Emmy nominee Edgar Ramirez, Ismael Cruz Cordova, as well as American Horror Story's Lily Rabe and Noah Jupe, who plays Nicole and Hugh's son Henry.

Donald Sutherland and Catherine Stamper also make up the stars in the show.

VIDEO: Nicole Kidman is grilled by The Undoing co-star Hugh Grant

Fans are already gripped on the mini-series and are desperate to find out who killed Elena, a new mum at Grace and Jonathan's son Henry's private school, following the first nail-biting episode.

elena the undoing© Photo: Sky

Who killed Elena in The Undoing?

Taking to Twitter to discuss their theories, one wrote: "The obvious choice is to say Jonathan is the killer but what if it was both him and Grace who are the killer couple! Grace's memories can't be trsuted! She knows not just more than she lets on she knows it all!"

MORE: Nicole Kidman rocks shorter shaggy hairstyle - and looks incredible

READ: ALL you need to know about The Undoing - from famous cast to the killer 

Another wrote, referring to Grace's husband: "So Elena knew her husband and possibly had an affair with him and he killed him?"

the undoing nicole kidman© Photo: Sky

Does Grace Fraser know more than she is letting on?

A third added: "Got 30 minutes into this and deducted that the dead woman was having an affair with Hugh Grant, who killed her, which is why he said a patient died, and why they left the party at the same time."

hugh grant the undoing© Photo: Sky

Is Jonathan Fraser guilty?

A fourth guessed: "Right, having looked at this whole first episode I have decided that Hugh Grant has killed the lady, the baby is actually his and he's on the run. I'm not sure if he is actually Jonathan Fraser either."

READ: Nicole Kidman discusses major change impacting Keith Urban and their daughters

Nicole and Hugh had the best time working alongside each other, having been friends for many years.

RELATED: Nicole Kidman reveals she's 'so sad' as daughter Sunday receives frustrating news

MORE: Inside Nicole Kidman and Keith Urban's living room in their Australian farmhouse

Chatting to Marie Claire with Hugh, the star said: "Well, I like you. So that was a really easy part… Because there was something very relaxed, obviously, because I'm Australian and you're British, we have that… I don’t know, it’s just a sense of humour. It’s good chemistry."

nicole kidman hugh grant© Photo: Sky

Nicole Kidman and Hugh Grant play husband and wife in the thriller

Hugh agreed and Nicole continued: "We talked... I trust you. But that's also part of working together, I think, when you really click, then you sort of sit and you do talk and you share things and you open up.

"You're incredibly honest. I'm always like, ‘Hugh, shush, you can't say that.’"

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