When Special Investigating Officer Steve Wilkins is shocked at a series of unsolved crimes in his hometown, he is given permission to launch a new operation to review all the evidence

When the body of EastEnders actress Gemma McCluskie is discovered in Regent's Canal in March 2012, dogged detective work eventually leads the police to her brother Tony

Tracie Andrews purportedly witnesses the murder of her boyfriend Lee Harvey in a country lane in December 1996, but all is not as it seems

Cameras follow author and journalist Satish Sekar, who is determined to seek justice for three men wrongly imprisoned for murder. When police and politicians agree to reopen the case, a real killer is put behind bars.

In 1992, police and the family of 25-year-old Stephanie Slater feared the worst when the estate agent went missing, the start of an eight-day ordeal defined by terror.

Documentary following the investigation into the death of Nikitta Grender, and the extensive police and forensics work that identified her killer and brought them to justice.