Part two of two. Detectives have arrested 25-year-old art student Luke Deeley, who was previously reported missing, but is now refusing to talk. Officers still need to find the evidence to prove that he's the killer of beloved grandmother, June Fox-Roberts.

Part one of two. Documentary revealing how detectives solved two murders - from the first `Code Blue' call to the crime scene, through to the convictions of the killers. In the first part, a 999 call from a distraught daughter launches a murder investigation to find the brutal killer of a beloved grandmother, June Fox-Roberts. With access to the South Wales Police's Major Crimes Unit, detectives try to identify the killer through CCTV footage in the hours before and after June's death.