The murder of Stephen Whitehead, who was found bludgeoned to death at work, leading police to suspect a burglary had gone wrong. But was the killer in fact a colleague harbouring a deadly grudge?

The killing of 18-year-old father Jon-Jo Highton, who was ambushed by a gang and murdered after a night out. There were multiple suspects - but which one committed the crime?

Keith Philpott was a much-liked member of his community, but became the victim of a gruesome murder. Detectives uncovered a revenge plot built on lies.