The case of Gary Allen. In the town of Rotherham, details uncovered of two cases separated by two decades. Alena Grlakova was discovered in 2019, leading to a suspect from a case in 1997. 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.