In April 2015, 24-year-old student Karen Buckley went missing whilst on a night out with friends in the West End of Glasgow. Emilia visits the location where Karen was last seen, the Sanctuary nightclub, and learns about the investigation that tried to find her. An interview with the Senior Investigating Officer reveals how a suspect was quickly identified and how tracking his movements on CCTV led to a disturbing and tragic discovery. Murdertown returns for a fourth season, this time hosted by award-winning actress Emilia Fox. In each episode, Emilia will visit towns and local communities throughout the country rocked by murder and tragedies, from which the scars persist to this day. Through the testimony of investigating police officers, local journalists, friends and relatives, the series re-tells these shocking incidents and how the lives of those directly affected will never be the same again.