Deputy Police Chief Brenda Leigh Johnson has an offbeat personality, uses a tough-as-nails approach, and has a track record as one of the country's leading investigators. For the Atlanta transplant heading up the Priority Homicide Division of the Los Angeles Police Department, her position on this elite detective squad, which handles high-profile cases of a sensitive nature, is a tenuous balancing act. She faces antagonistic roadblocks, even from her own peers, and must manage a team that remains wary of her unconventional style.

Contains all 15 episodes from the fourth season. Special features: Police files: unaired scenes ; To catch a lie: observational tips from an FBI interriogator ; A day in the life of a homocide detective: series star rides along with a retired LAPD detective Mike Berchem ; Gag reel.

Disc 1 (Episodes 1-4):Controlled burn ; Speed bump ; Cherry bomb ; Live wire -- Disc 2 (Episodes 5-8): Dial M for Provenze ; Problem child ; Sudden death ; Split ends -- Disc 3 (Episode 9-12): Tijuana brass ; Time bomb ; Good faith ; Junk in the trunk -- Disc 4 (Episode 13-15): Power of attorney ; Fate line ; Double blind.