Lisa this sounds like the US version of a drama written by Lynda la Plante which has been very successful in the UK and received good critical reviews, with Helen Mirren in the role of policewoman Jane Tennyson. There were several different stories made for TV over a number of years, folllowing Jane's rise through the police force, the difficulties she encountered as a professional woman in a largely man's world and some gruesome murder plots/stories. I enjoyed the ones I saw; I think Mirren is a brilliant actor (maybe I'll write about her for English Culture - amongst other roles she has played Queen Elizabeth in the 2006 film The Queen.