Until I Kill You - Episode Guide

This companion documentary tells the story of Delia Balmer, a woman who bravely faced and survived the brutality of serial killer John Sweeney.

The film explores the haunting stories of Sweeney's known victims, including American model Melissa Halstead and mother of three Paula Fields, and reveals the grisly details of how he dismembered their bodies and disposed of their remains — Melissa's in a Rotterdam canal and Paula's in London's Regent's Canal.

Narrated by Anna Maxwell Martin, who plays Delia in the gripping ITV drama series Until I Kill You, this documentary offers a raw glimpse into the real-life events that inspired the series and brings a powerful and emotive view to the story.

When Delia meets John Sweeney in a local pub, it sparks an unexpected romance. However, as their relationship develops, she begins to suspect a darker side to him.

When Sweeney's true nature is finally revealed, Delia uses all her guile to escape. Now she must decide what to do next – will going to the police put her in more danger?

With Delia in a critical condition, the police try to find Sweeney. Can Delia pick up the pieces of her life with Sweeney still at large?

A terrified Delia must face Sweeney again in court to ensure his conviction. But the traumatic outcome of the trial has a profound effect on her life.