Overview
The programme follows the work of a special police team who investigate "cold cases", usually murders that took place a number of years ago and were never solved. The team uses evidence which has just come to light, as well as modern technology to examine previous evidence. Trevor Eve portrays the workaholic and often eccentric Peter Boyd on whom plotlines are often centered. As the series has progressed, storylines have focused on the personal lives of the characters as well as the criminal investigations (for example, Boyd's temper control in "Anger Management").