Cleveland homicide detectives follow a bizarre trail of evidence in the case of a father of five who was stabbed over 50 times.

In Dallas, a young father is ambushed at a gas station. In Miami, a beloved local rapper is gunned down at his car wash.

Dallas detectives hope that video footage can identify the person who murdered a young father; a Cleveland mother of six is shot and killed on her birthday.

Cleveland detectives uncover a shocking motive in the case of a bullied teen who was shot and killed outside a public library.

A group of carjacking killers terrorizes a Dallas neighborhood; tragedy results when an argument between friends gets out of control.

A Dallas police detective must unravel a robbery plot when the body of an expectant father is found bound and burned in a creek bed.

A young mother is viscously murdered and dumped in an abandoned house. Detectives Nate Sowa and Ray Diaz make a surprising discovery about the killer.

Masked gunmen terrorize a Cleveland family and execute the young patriarch; Dallas detectives hunt for a killer who gunned down an innocent teen with an assault rifle.

A man is shot to death in a nearby suburb, and police learn that his wife may hold the key to solving the crime.

A young father is ambushed and killed at a Dallas gas station; detectives suspect an inside job in the case of a Miami rapper who was gunned down at his car wash.

In Dallas a young father is shot in the back, but no one wants to talk.

In Dallas, when a good Samaritan is gunned down trying to protect his friends, detectives must unravel a tangled web of bad tips and lies in their hunt for the killer.

A young mother of three is gunned down in front of her Cleveland home; a birthday party celebration in Florida turns deadly.

In Broward County, when a migrant worker is robbed and beaten to death, Dets. Valerian Perez and Kevin Forsberg must track down a vicious predator before he strikes again. Then, in Cleveland, a man is shot dead in broad daylight at a carwash, and Dets. Lem Griffin and Art Echols fear their case will go cold when none of the witnesses will talk.

A New Orleans police detective hunts for the killers of a recent high-school graduate; an unidentified woman is found shot and dumped on the side of a Dallas highway.

A 14-year-old Cleveland girl dies at her own birthday party when gunmen fire on a crowd; homicide detectives race to track down multiple shooters in the crime.

A violent carjacking leads to the murder of a young father; a Miami musician is shot down in the street.

In Miami, a family is shattered when two teenage brothers are gunned down in their own backyard. Two surviving friends point Detective TC Cepero and his team in the direction of two desperate and dangerous gunmen on the run. But Cepero will need the community's help to get the brazen killers off the street.

A police detective hopes to locate the killers of two Miami men before the bloody turf war claims another victim.

The use of a stolen bank card leads Dallas detectives toward the killer of an elderly woman; a teenage honors student is found shot in her own backyard.

In Cleveland, when a teenager is shot down in the street, detectives discover his best friends may have something to do with the murder. In Harris County, a young woman set on fire clings to life as deputies race to find who left her for dead.

In Cleveland a man is gunned down defending his home on New Year's Eve. With no eyewitnesses, Det. Melvin Smith must rely on DNA evidence to track down the killers. And in Broward County, Florida, when an elderly man is found dead in his apartment, Det. John Curcio's hunt for the suspects leads to a surprising discovery.

Dallas detectives hunt a car thief who fatally shot a man and stole his vehicle; detectives search for a witness for can identify the killer of a Cleveland man.

Police detectives search for an elusive killer who shot a man in a Cleveland courtyard; a 72-year-old grandmother is beaten to death in her Dallas home.

The brutal slayings of a mother and her two children send a New Orleans detective on the hunt for a suspect who may have been acquainted with the victims.