In March 2020, 19-year-old Jaydon McFarlane was fatally stabbed in broad daylight on a residential street in Ashford, Kent, by a man wielding both a zombie knife and a kitchen knife. As detectives began a fast-moving investigation, they discovered how the victim and killer were former friends who had become members of rival gangs, involved in a dispute over counterfeit £20 notes used to buy cannabis, culminating in a terrifying chase through a shopping centre