Ep 1. Closure: Volume XI, Episode 1

After two months investigating the brutal rape and murder of a schoolgirl, DCI Connor has no leads, no DNA evidence, and one highly unreliable witness. A review of similar unsolved cases suggests a serial killer at work, with a string of victims stretching back years. Under relentless badgering from her boss, Connor enlists the help of a famous American profiler to get inside the mind of an elusive murderer.