In 1992, a young mother is killed in broad daylight on London’s Wimbledon Common, leaving her two-year-old toddler as the sole witness. Exploring the shocking real events behind the drama series The Witness, this gripping documentary from BAFTA-nominated director Lucy Bowden examines the notorious, years-long police investigation that followed. Featuring exclusive archive footage, first-hand accounts from family members, and insights from leading forensic experts, the film unpacks how a flawed, highly-publicised inquiry led to the wrong man's prosecution, before a stunning breakthrough reignited a family's fight for justice over a decade later.