Summer park turns deadly - Crimes That Shook Britain

A peaceful summer evening turned into a nightmare when a knife-wielding attacker struck at random, leaving terror and tragedy in his wake. Discover the chilling story of Khairi Saadallah, whose violent past and radical connections led to a devastating event that changed lives forever. Broadcaster Dermot Murnaghan is joined by a team of experts and witnesses to examine cases that gripped the nation to explore how they shaped public conversation. Told by family, friends and the community at the heart of the crimes, the series analyses the events that led to such atrocities before examining the devastating effects that they have left in their wake.