Thriller series which tracks five 24-hour periods in a police investigation.

Hugh Bonneville, Patrick Malahide, Penelope Wilton, Edward Woodward, David Oyelowo, Sarah Smart, Richard Harrington, Charlie Creed-Miles, Janet McTeer, Christine Tremarco, Al Weaver, Anne Reid, David Morrissey, Navin Chowdhry, Kerry Condon, Chris Fountain, Bernard Hill, Suranne Jones, Hugo Speer, Lucinda Dryzek, Derek Riddell, Rory Kinnear, Philip Arditti, Steve Evets