<p>The murder of Diane Sindall in Birkenhead, Merseyside led to Britain’s longest miscarriage of justice when local man Peter Sullivan's conviction collapsed after 38 years.</p><p>This series returns to the streets, alleyways and estates of Birkenhead where it all happened, retracing Diane’s final movements. </p><p>Follow through eyewitness testimony, unheard accounts and modern forensic science as we uncover how a brutal crime in a public place went unsolved for decades, while a killer may still be alive and closer to home than anyone realised.</p><p>At the heart of this story is Diane: who she was, how violence against women shaped the investigation and what justice really looks like when a community has lived with fear, silence and unanswered questions for generations.</p><p>Presenter: Olivia Graham. Producers: Kate Bissell, Gemma Maull and Olivia Graham. Sound Design and Music Composition: Phil Channell. Mixing: Ivan Eastley. Story Consultants: Neil McCarthy, Jack Kibble-White and Kirsty Williams. Online Producer: Rachael Smith. Development was by BBC Audio Scotland and BBC Merseyside. Executive Editors: Gillian Wheelan and Ben Anderson. Commissioning Editor: Alistair Miskin.</p><p>There’s graphic descriptions of violence in this series. For details of help and support in the UK, visit bbc.co.uk/actionline.</p>