在这部主要嫌疑犯5：判断失误剧情/犯罪/悬疑片中,DS Jane Tennison is relocated from the Met to the Greater Manchester Police where she finds herself in conflict with her new superior, Det Chief Supt Martin Ballinger, over how to deal with the city's drugs and guns menace. Encountering a corrupt reprobate who rules over the local crime scene and believing him to be her prime suspect, Tennison finds her every move in the investigation anticipated -- but how?
Tennison on a new beat investigates the killing of a drug runner, with the runner's employer, "The Street," as her prime suspect. Meanwhile, The Street is conducting his own investigation into the killing, with the help of his team of hoodlums and his vicious Rottweilers. And as Tennison rankles that her subordinates accuse her of sleeping her way to the top, she begins an affair with her married supervisor.
