Investigations

The unsolved 1970 murders of Jacqueline Ansell-Lamb and Barbara Mayo.

The unsolved 2008 murder of Sarah Melia in Horwich, Greater Manchester.

A city-centre murder, two unsafe convictions and a case that remains unresolved.

A Soho hostess was killed by a customer whose face was captured on camera but never identified.

A professional execution at the wrong address left an innocent woman dead.

Two murders, two miles apart, and questions that DNA has only partly answered.

Abducted in Birmingham and set alight sixty miles away, Tracy used her final hours to describe her killers.

A teenage girl was murdered yards from home after a series of attacks in the same area.

Two young women were murdered near their homes and doubt still surrounds the investigations.

Three execution-style murders in and around Epping Forest remain unsolved.