Created by Cath Staincliffe, who also wrote several episodes, it centres on a single mother of four trying to balance a demanding career with raising her young family. Her ex-husband has since started a new family. First shown on 18 May 2003, five series in total were broadcast. The fifth series debuted on 7 September 2009. The cast includes a new detective played by Belinda Everett, with the first episode featuring Holliday Grainger, Chris Hall, Siobhan Finneran and Chris Gascoyne. Guest stars in subsequent episodes include Mark Benton, Lee Boardman, Kieran O'Brien, Brendan Coyle, Heather Peace, Tina O'Brien, Sylvia Syms and Anthony Flanagan.
- Caroline Quentin … DCI Janine Lewis, (2003-9)
- Ian Kelsey … DI Richard Mayne, (2003-9)
- Saskia Wickham … DCS Louise Hogg, (2006-9)
- Nicholas Murchie … DS Tony Shap, (2003-9)
- Paul Loughran … DS Ian Butchers, (2003-9)
- Rhea Bailey … DC Lisa Goodall, (2003-7)
- Belinda Everett … DC Kat Skerton, (2008-9)