This groundbreaking real-life detective series returns with a brand-new season, and a brand new location: HARRIS COUNTY, TX. We're also back with the top men and women working homicides in BIRMINGHAM, LOUISVILLE, and MIAMI. We go behind the police tape with investigators as they work their toughest new cases, interrogate their most resistant suspects, and battle the law of the streets, where helping the police is sometimes considered a crime worse than murder.

BIRMINGHAM

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In Birmingham, join Lieutenant Praytor, Sergeants Noblitt and Thurmond, Detectives Allison, Anderson, Bristow, Cotton, Jacobs, Lucas, McCurdy, Morrow, Tanks, Torrence, Walker, and Williams as they:

• Chase down the killer of a woman shot in her car while her three young children watched from the backseat.
• Crack the case in the murder of a devoted father, lured to an abandoned apartment and shot dead.
• Hunt for clues in two murders that occur on different sides of the city and discover they may be connected.

HARRIS COUNTY

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In Harris County, TX, join Lieutenant Nelson, Sergeants Davis, Pinkins, Beall, Clopton, Dousay, Kuhlman, Miller, Rivera and Wedgeworth, and Deputies Alanis, Pool, Viramontes, Cassidy, Quintanilla, Gonzales, and Wolfford as they:

• Determine whether the shooting of a teenager was an act of self-defense or murder.
• Investigate the vicious murder of a young woman, found dead in her bedroom with her throat slashed.
• Seek the truth behind the brazen murder of a grandfather, shot to death in the bathroom of a local bar.
• Zero in on the man who shot and killed a man over forty dollars.

LOUISVILLE

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In Louisville, join Lieutenant Wilkerson, Sergeants Butler, Thompson and Crowell, Detectives Arnold, Brown, Cadwell, Downs, Cohn, Maroni, Middleton, Payne, Russ, Stalvey, Trees, Wescott, and Willett as they:

• Navigate their way through false leads and deceptive witnesses in order to track down the killer of a married couple, shot in front of their children.
• Are hot on the trail of a killer wanted for shooting up a house full of sleeping people with a machine gun.
• Break through a community's rigid code of silence to catch a killer.
• Identify the killers responsible for gunning down four cousins hanging out on their grandmother's porch.
• Cross the state border to hunt down two brothers suspected of killing a young father of three.
• Hunt down the killers of a disabled mother and her son, ambushed and executed in their own home.

MIAMI

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In Miami, join Lt. Buhrmaster, Sergeants Aguilar, Cooper, Ford, Gonzalez and Williams, and Detectives Bosch, Castillo, Cepero, Garcia, John, Martinez, Ponce, Reyes, Sanchez, Silva, and Tamayo as they:

• Find dismembered body parts in Biscayne Bay and piece together the final hours of the victim's life.
• Indentify the killer of a homeless man, shot while defending his fellow transient friends.
• Unravel a twisted double homicide in which the killer might be the victim's best friend.

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