A very confusing beginning. Where music is often used to establish a time frame for a drama, the two songs used at the beginning of this one were from 1970. So I thought it was 1970, but then there was one from 1973. The latter being the correct one chronologically to map on to the events that unfolded.

But hang on, this was a flashback, so what year was the new investigative work taking place. It took a while, but I think it was 2003.

So, the start of the drama was very muddled, especially character wise.

Overall I thought it was one episode too long. The third part particularly dragged and the final couple of episodes could have been condensed into one.

Premise: Twenty-first century technological advances help detectives with a cold murder case from 1973.

Geraldine Hughes and Pauline Floyd both left the Top Rank nightclub in Swansea without ever making it home.

Their bodies were discovered later in Llandarcy. Dubbed the case of the "Saturday Night Strangler", it became the first documented case of a serial killer in Wales.

If it hadn't been for the fact it was based on real events it would have seem cliched; young detective should be seen and not heard and not have anything to offer the operation being run by superiors who are seriously flawed policing wise.

A strong cast, particularly Philip Glenister, made this watchable.