Who slit her husband's throat? - 999 Killer On The Line

In York 2011, Susan Webb called 999 to report that her husband Mark was threatening to self harm. Mark Webb was then found dead at the property, with his throat slashed. But during the investigation, evidence suggests that this death was not a suicide. 999 Killer On The Line investigates domestic crime cases in which the murderer chillingly made the emergency call themselves in order to mask their guilt. Each episode contains interviews with the victim’s friends and family members, interspersed with dramatic reconstruction and a strong narrative.