The documentary, which is narrated by Sheridan Smith, takes a detailed look at the case from Julie's disappearance in 1989 until the murderer was retried and jailed for life in 2006, becoming the first person convicted under the changed law.

Featuring exclusive interviews with Ann, her family and friends, retired police officers, and other key individuals close to the story, the documentary will also include rare archive and images that tell the story of one mother's unwavering resolve to get justice for her daughter.

The documentary shows Ann's extraordinary campaign, her unshakable determination, and how her fight for justice has since helped secure other landmark convictions, including those of Stephen Lawrence's killers.

Haunted by nightmares of her daughter's body, Ann channels her grief into putting pressure on the police for answers, while also battling to save her marriage from crumbling under the strain. Ann's hopes of getting justice are boosted when a local man is arrested, but the accused seems to be scrutinised less than Julie when it comes to the trial and the bungled investigation leads to an unthinkably awful outcome.