Seasons & episodes

Birmingham/Louisville - Det. Jerry Williams and his team investigate the murder of a young man shot dead in an abandoned apartment. And In Louisville, Det. Brenda Wescott investigates the unusual death of a woman shot dead on a residential street.

Harris County/Miami - Dep. Mario Quintanilla investigates the murder of a woman shot during a robbery of her illegal game room. Acting on a tip that his suspects are from Central America, Quintanilla races to find them before they can flee the country. And in Miami, Det. Fabio Sanchez heads to Little Haiti to investigate the homicide of two young men shot in their living room. Sanchez must track down a friend of the victims, who was with them before they were shot, to find out what he knows.

Harris County/Birmingham - When a 16-year-old boy is murdered at his family's roadside taco stand, Sgt. Henry Palacios is faced with one of the most tragic cases he has ever seen. Palacios is hot on the trail of his suspect, when another shooting turns the case on its head. And in Birmingham, Detective Marcel Walker investigates the death of a 29-year-old car mechanic, killed when a late-night tune-up turns deadly. When he gets a tip that the suspect is about to skip town, Walker launches a major manhunt.

Harris County/Harris County - Dep. Jason Brown is called out on Easter Sunday to investigate the brutal shooting of a woman who was a school bus driver and mother of two. Meanwhile, Sgt. Sidney Miller takes on the murder of a young father, shot dead in a courtyard.

In Dallas, detectives investigated the shooting death of 26-year-old Daniel Barron, who was killed in the doorway of his home. Detectives soon discovered that the victim's residence doubled as a drug den and that he was robbed. A tipster called-in and eventually six suspects were arrested and charged with capital murder. All six individuals admit involvement in the crime and point to 19-year-old Callie Marshall, mother of two, as the group's ringleader. A year and a half later, Callie finally faces a jury of her peers. Will they see a confused girl who organized the robbery in order to bail her boyfriend out of jail in time for Christmas, or a coldblooded killer?