The case of Steven Grierson, a serial killer who murdered four teenagers and terrorised dozens of others, becoming known as the Sunderland strangler.

The case of Paul Longworth, who murdered his wife by strangling her with sailing rope and arranging her body in their home, then claimed it was suicide.

When Joan Stirland's son Michael O'Brien murdered Colin Gunn's nephew in 2003, she and her husband's lives were in danger. They went on the run, but their son's past soon caught up with them.

Looking at the case of the 'Vampire Killer' Mathew Hardman, who cut out the heart, and then drank the blood of 90-year-old Mabel Leyshon of Anglesey in 2001.

The case known as the Garage Murders, which sparked a nationwide manhunt that saw Terry Clifton repeatedly evade the police before he was jailed for murdering two mechanics.

A profile of the prolific young serial killer Stephen Akinmurele, who was only 21-years-old when he murdered his victims.