The First 48

In Harris County, Dep. Abraham Alanis and his team investigate the murder of a man, married with four young children, who was found robbed and shot to death outside an abandoned house. With no other leads to go on, investigators discover that their victim held a secret that could lead to his killer.

In Detroit, Sergeant Matthew Gnatek and Officer Nancy Foster are investigating the murder of a soon-to-be father, found shot to death in a deserted field during a snowstorm. With no witnesses and potential evidence disappearing under the blanketing snow, the Crime Scene Unit works quickly with metal detectors, to uncover an item that will put Gnatek and Foster on the trail.

In Louisville rookie homicide detective Collin King is assigned his first case when an unidentified man is found dead near a railroad track.

In Miami, Detective Anthony Reyes and the homicide team are investigating the murder of a man found brutally beaten to death below a major interstate.

In Miami, Det. Frank Sanchez responds to the murder of a retired Miami Police captain, shot in broad daylight at a marina on the Miami River.

When fire fighters in Detroit respond to a house fire and discover a 63-year-old woman stabbed and bound, Sergeant Kenny Gardner and Investigator Barbara Simon must investigate the brutal murder.

In Harris County, TX a young man is days away from testifying as a witness in an aggravated assault case when he is suddenly gunned down near his home.

The Miami homicide team is investigating the murder of a man found naked, tied up, and floating in Biscayne Bay.

In Detroit, Sgt. Ernest Wilson and his team investigate the double-homicide of two twenty-six-year-olds, shot execution-style in the basement. When investigators find a slip of paper at the crime scene, it initiates a manhunt that sends investigators to the other side of the country. And in Harris County, TX, a 79-year-old woman is shot and killed while unloading groceries from her car.

In Charlotte, when a store clerk and father of three young children is shot in a robbery by a masked man, lead Detective David Osorio and his team interview witnesses and find that no one knows the shooter.

In Charlotte, rookie homicide Det. Brian Whitworth is assigned his first case when a woman is discovered on her bedroom floor, stabbed to death. Hampered by false leads and a lack of witnesses, Whitworth must rely on the physical evidence to bring the killer to justice. Meanwhile, in Louisville, Det. Jon Lesher investigates the homicide of a 43-year-old father, gunned down in front of his house.

In Louisville, Det. Kristen Downs is at a dead end in her search for the killer of a wheelchair bound man, until she discovers the victim's sons might be the key to the case.

After a year with the gang unit, Detective Kevin Ruggiero returns to Miami Homicide, investigating a drive-by shooting that left two men dead. He has little to work with until he learns that one of the victims was a founder of a local gang. Then in Louisville, Detective Kristen Downs responds to the shooting of a 17-year-old boy.

When Louisville Detectives Mickey Cohn and Jon Lesher discover that their two murder victims have matching tattoos, they suspect the murders might be related.

In Las Vegas, NV, Detective Jimmy Vaccaro and his team are called out at midnight to an empty desert highway, where a man's been shot dead in the middle of the road. From the victim's cellphone, they quickly get a lead: just minutes before he was killed, he received a call from a friend with whom he worked at a local strip club.

When a fight at a Charlotte nightclub escalates to gunfire, an innocent bystander is killed in the crossfire. Detective Terry Brandon and his team are forced to pit brother against brother to solve the murder.