Channel 4's stylish two-parter, Low Winter Sun, is one of the most gripping and tense police shows ever produced by the world-renowned channel.

Frank Agnew is a law abiding detective at Blackmoss CID in Edinburgh. However, when his girlfriend Sinada goes missing, his colleague Joe Geddes informs him that his corrupt partner Brendan McCann has murdered her and so Agnew, with Geddes' help, takes revenge. As the plot thickens, it occurs to Agnew that Geddes may have had his own reasons to want McCann dead. And when another body is discovered horribly mutilated in the boot of McCann's car, Agnew soon finds himself leading an investigation into a spate of murders, one of which he himself committed... Agnew then receives a phone call from his "dead" girlfriend's mobile and he realises that she may not actually be dead and begins to try and track her down...

Will he ever find Sinada?