Without Motive: As Robert Jackson walks out of prison a free man, the murder squad pay their last respects to Margaret Walkinshaw at an emotionally charged funeral. Then it's back to the hard grind of sifting through all the evidence to find the real M4 murderer : and it looks like the hard work could pay off as forensics discover vital DNA evidence that might help identify the killer.

Starring:

Karl Johnson

Genre:

Crime, Thriller