ITV's Until I Kill You - full cast, episodes, plot and filming locations

ITV will air it's new true crime drama Until I Kill You this week, following the true story of how a woman survived a relationship with a serial killer. The series starts on Sunday, November 3 and explores the relationship of Delia Balmer (Anna Maxwell Martin) and John Sweeney, including her survival of a near-fatal attack.

Set in the 1990s, the series is based on a memoir of the same name written by Delia Balmer. In the series, nurse Delia thinks she's found her perfect partner when she meets fellow free-spirit Sweeney in a local pub.

However, as their relationship develops, Sweeney's dark past comes to light, revealing that he killed his former girlfriend and disposed of her body in an Amsterdam canal. Here's everything you need to know about ITV's new true crime drama series Until I Kill You.

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What is ITV's Until I Kill You about?

In 1991, Delia Balmer leads a solitary life in London working as an agency nurse. When she meets fellow free-spirit John Sweeney in a local pub, she thinks she's found the connection she's been looking for. But things take a sinister turn.

Ahead of the show's release, ITV teased: "As the relationship develops, Sweeney’s artistic, anti-establishment persona gives way to a darker side, culminating in a series of violent attacks on Delia, during which he tells her he killed his former girlfriend and disposed of her body in an Amsterdam canal. Sweeney is arrested but, due to a catastrophic failure by the court to realise how dangerous he is, granted bail.

"He immediately pursues Delia and subjects her to a horrific, near-fatal attack. She survives, but Sweeney evades capture and disappears. Shattered by the trauma and injuries inflicted by Sweeney, Delia bravely seeks to rebuild her life. But Sweeney returns seven years later and is arrested for the murder of another girlfriend in North London.

"Delia’s fragile recovery is shattered all over again as she has to face Sweeney in open court, her testimony vital to the prosecution case against him. This is the story of one woman’s astonishing will to survive through physical and emotional torment, despite the failings of the institutions which were meant to protect her."

How many episodes of Until I Kill You are there?

Until I Kill You is a four-part drama with each episode lasting an hour. The series will air on ITV1 and ITVX on Sunday, November 3 at 9pm. The remaining episodes will be broadcast over three consecutive nights, culminating in the finale on Wednesday, November 6.

Who is in the cast of ITV's Until I Kill You?

Anna Maxwell Martin, known for her in the hit BBC sitcom Motherland, leads the cast as Delia Balmer. She stars alongside renowed actor and director Shaun Evans (Endeavour, Vigil) who plays serial killer John Sweeney.

Here is the case of ITV's Until I Kill You in full:

• Anna Maxwell Martin as Delia Balmer
• Shaun Evans as John Sweeney
• Stephanie Street as Janice Rainsworth
• Amanda Wilkin as Leah
• Sophie Ford as Imelda Dunning
• Dean Rehman as Dr Gavin Lane
• Mitchell Mullen as Jack Halstead
• Pieter Lawman as Amsterdam Detective
• Gabriela Toloi as Manuela
• Alice Barclay as Mrs Wilson

Where was ITV's Until I Kill You filmed?

Filming locations have reportedly included Swansea, outside its historic Guildhall. No more official filming locations have been revealed by ITV.