Detective Chief Inspector Jane Tennison  is an intense, driven, flawed alcoholic who meets sexism and harassment  on the job with determination and a sense of political saavy.   Not only is she technically shrewd, she is also a fine, highly intuitive  detective who feels her way toward the truth, occasionally stumbling  over her personal and professional faults - all of which make her  one of the most convincing and indelible fictional detectives ever portrayed.   Through the seven installments of Prime Suspect, Helen Mirren  shapes this complex character, making an equally exorbitant investment  in Tennison's self-destructive tendencies and her talent for police  work.
This series of seven long, multi-part  films, originally broadcast on ITV in the UK and on PBS's Masterpiece  Theatre here in the US, comprise no less than some of the finest  crime drama ever televised.  Although there are traces of the great  British traditions of crime fiction here and there, Prime Suspect  has a distinctive style marked by a focus on character and dire, bleak  atmospherics.  Gray skies, concrete police buildings and housing  estates, and the fluorescent lights of cheap offices and municipal morgues  are the visual signals that tell us we're neck-deep in police work.   Yet it's a far more grim and realistic look than the brighter colors  of, say, Law and Order.
But the real distinguishing features  of all seven series of Prime Suspect are the writing and the  acting.  Creator Lynda La Plante wrote the first and third installments,  establishing the major characters and tone of the show.  Tennison  is an outsider, a woman working in a man's world, a fact that drives  her professional successes just as it contributes to regular flare-ups  of her personal flaws.  Particularly during the earlier series,  Tennison is beset by a variety of forces that plague her career, originating  in the criminal world and among her own colleagues.  Prime Suspect's  second major character, appearing in the first, third, and seventh series,  is Tennison's chief antagonist and colleague, Detective Sergeant Bill  Otley, played with a cadaverous, withering smarminess by Tom Bell.   Sexist, treacherous, and threatened by Tennison's talent, Otley works  hard through the first and third series to discredit Tennison, hoping  to have her removed from his supervision.  Otley's adversarial  - and, at times, outright illegal - behavior drives Tennison to  further excel at her job - and to drink excessively off-duty.   Her relationships with men, at times healthy and at times not, are always  short-lived, thanks to her professional commitment and dependence upon  booze.
Mirren and Bell are joined by a parade  of fine actors in roles both large and small.  Tom Wilkinson appears  in the first series as Tennison's kind but ultimately defeated boyfriend.   Ralph Fiennes is in it as well, but too briefly to merit the placement  his name receives on the DVD packaging.  The third series alone  includes performances by David Thewlis, Ciaran Hinds, Mark Strong, and  Jonny Lee Miller.  Frank Finlay appears in the last two installments  as Tennison's father.  In short, much of the first rank of contemporary  British actors makes their way through the series at some point.
The storylines of each installment  of Prime Suspect are consistently compelling and often genuinely  unpredictable, particularly by the standards of the average crime drama.   The first series begins with a relatively straightforward rape and murder,  but the suspect is anything but usual: when Tennison first catches up  with George Marlow (played by John Bowe), his guilt is anything but  clear.  We are unsure whether Marlow is the killer, or if Tennison's  ambition has gotten the better of her.  In addition to the usual  murder or two, future series attack pressing and touchy social issues  such as racism, child prostitution, drugs and gangs, and war crimes  stemming from the Yugoslav Wars of the 1990s.  In each case, plots  move swiftly and are often ingeniously constructed.  Only very  occasionally do the machinations of the mystery genre reveal their cogs  and wheels.
But the real heart and soul of Prime  Suspect is Mirren as Jane Tennison.  It's the tension she  generates as an unpredictable but brilliant loose cannon that keeps  us riveted to each and every minute of this outstanding series.   Tennison's flaws - her alcoholism, occasional irrationality, and  her struggle with double-edged "female" instincts - keep the character  on the fence, hovering between blockbuster success and the danger of  failure.  We can't always predict that she'll do the right  thing - and even when she chooses the proper path, her behavior upon  it can be reckless and self-destructive in the pursuit of solving a  case, proving a point, or simply spiting antagonistic colleagues such  as the intolerant and dangerous Otley.  In maintaining our interest  in Tennison, her missteps are as important as her wiser maneuvers.   They keep her human, plausible, and accessible. 

