An innocent man is fatally shot during an attempted carjacking in Cleveland; a mother is murdered in front of her daughter during a home invasion.
Detectives question the girlfriend of a man who was shot to death on a Miami street; a Cincinnati teen is shot in the head while asleep.
A man is killed during a gunfight in Kansas City, Mo.; a missing diamond ring may be the key to solving the stabbing death of a young mother.
Detectives investigate the murder of a man who received a call from a stranger moments before his death; a rookie detective investigates a triple homicide.
A Miami man is shot dead in front of his former girlfriend's home; surveillance video adds a twist to the case of a Kentucky man found dead in a parking lot.
Detectives investigate the murder of a Dallas man shot in his sleep, uncovering the shocking story of his girlfriend's dark past; a beloved Memphis, Tenn., "candy lady" is shot through her closed front door.
Detectives hope neighbors can provide information on the slaying of a Dallas father; suspects in the killing of a deaf man may be linked to an earlier unsolved murder.
A Miami detective suspects a drifter was responsible for the stabbing death of an elderly man; a woman is murdered during a robbery in her illegal game room.
A SWAT team joins the action when the alleged killer of a young mother makes a run for the Mexican border; Miami detectives suspect an apparent suicide may instead be foul play.
A 19-year-old man is gunned down in the middle of the street; a hiker discovers the remains of a decomposed body during a walk in the woods.
A police deputy races the clock to find the killer of an unidentified man found in a field; a shooting victim is found in an abandoned apartment.
A young man is murdered outside a liquor store in Memphis, Tenn.; an elderly man is duct-taped and beaten to death outside his Miami home.
Miami homicide detectives probe the killing of a man shot in broad daylight; a Honduran immigrant is found stabbed to death in a Dallas alley.
A young Dallas father's secret may have led to his shooting death; Cleveland detectives have little to work with as they probe the case of a mother who was strangled in her kitchen.
When a man is shot in front of his family in their home shortly before Christmas, detectives investigate drug dealers.
A New Orleans man is shot in front of his grandmother's home, and police detectives believe a woman close to the victim may have arranged the crime.
A New Orleans woman and her 4-year-old grandson are shot in her bedroom; the crime is investigated as the child struggles to survive.
Detectives from Tennessee, Minnesota and Florida recall the crimes that proved to be the most challenging cases of their careers.
A promising high-school senior is shot to death and stuffed into the trunk of his car a week before Christmas.
A New Orleans detective must prove he has the necessary evidence to convict the suspected killer of a young mother who was beaten to death in her home.
Detectives discover a house of horrors during their investigation into the fatal slashing of a New Orleans woman.
Detectives try to determine if the strangulation of a grandmother is possibly related to other killings in East Cleveland; a Dallas man is shot to death while in the back of his car with his girlfriend.
The case of a missing New Orleans couple takes an ominous turn when one of them is found dead in a river.
A New Orleans homicide detective hopes that surveillance footage can help him solve the case of a young father who was abducted and shot in the street.
Homicide detectives wander into a dark world of drugs and prostitution to solve an execution-style murder in a motel parking lot.
Two Atlanta men are ambushed at gunpoint, and only one survives the ordeal; a wedding ring provides a clue in the case of a mother's fatal stabbing.
An Oklahoma man is gunned down behind the wheel of his car; a woman receives a warning that her son is about to be murdered.
An Atlanta man is shot to death at an illegal after-hours establishment; an Oklahoma detective makes a shocking discovery while probing the murder of two young lovers.
A young Cleveland father is murdered in his car, and the police suspect his friend has information on the killer's identity; homicide detectives hunt for a shotgun-toting killer.
Detectives in Tulsa, Okla., encounter a neighborhood under siege by young thugs after a man is killed in his home by a stray gunshot.
Tulsa, Okla., police Detective Justin Ritter's investigation into the stabbing of an innocent father leads him into the dangerous world of methamphetamine addiction.
A young Oklahoma woman is shot in broad daylight; police Detective Justin Ritter believes witnesses to the crime are withholding information.
A young father killed at an abandoned Atlanta car wash may have been the victim of gang violence; a Gulf War veteran is shot dead in a park.
Detective Summer Benton uncovers the shocking reason why a young Atlanta father was ambushed and murdered by gunmen.
The killing of a foreign exchange student is captured on video; family members are involved in a shooting at a New Orleans carwash.