Lottie Mason is a Los Angeles cop, working vice. She has a number of problems at work, being under Internal Affairs investigation after a shooting incident and being sexually harassed by Lt. Morgan, her superior officer.
Black police officer Russell Stevens applies for a special anti-drug squad which targets the highest boss of cocaine delivery to LA—the Colombian foreign minister's nephew. Russell works his way up from the bottom undercover, until he reaches the boss.
Two veteran New York City detectives work to identify the possible connection between a recent murder and a case they believe they solved years ago; is there a serial killer on the loose, and did they perhaps put the wrong person behind bars?
Seen-it-all New York detective Frank Keller is unsettled - he has done twenty years on the force and could retire, and he hasn't come to terms with his wife leaving him for a colleague. Joining up with an officer from another part of town to investigate a series of murders linked by the lonely hearts columns he finds he is getting seriously and possibly dangerously involved with Helen, one of the main suspects.