The First 48

Police dig through a basement in search of a body; a brutal public attack leads to murder in Miami.

A man is fatally shot during an attempted carjacking; a mother is murdered during a home invasion.

A Miami man is shot to death on the street; a Cincinnati teen is shot in the head while asleep.

A man is killed during a gunfight in Kansas City, Mo.; a young mother is stabbed in her own bedroom.

Detectives investigate the murder of a man who received a call from a stranger.

A stabbing victim is found in a Dallas apartment; a club night turns deadly for an unarmed Miami teen.

Gunfire interrupts a children's football tournament; a Louisville, Ky., celebrity is gunned down.

A Miami man is shot in front of his ex-girlfriend's home; a man is found dead in a parking lot.

A Dallas man is shot in his sleep; a beloved Memphis, Tenn., "candy lady" is killed.

Detectives probe the murders of a Dallas father and a deaf man who was stabbed in his doorway.

A drifter is the prime suspect in a stabbing death; a woman is murdered in her illegal game room.

A 19-year-old man is gunned down in the street; a decomposed body is found in the woods.

A man is murdered outside a liquor store; an elderly man is beaten to death outside his Miami home.

An unidentified man is found dead in a field; a shooting victim is found in an abandoned apartment.

The alleged killer of a young mother makes a run for the Mexican border; a suicide raises doubts.

A Miami man is shot in broad daylight; a Honduran immigrant is stabbed to death in Dallas.

A worker at an all-night ice rink is killed; police seek evidence to charge two murder suspects.

A New Orleans homicide detective hopes that surveillance footage can help him solve a murder.

The case of a missing New Orleans couple takes an ominous turn when one of them is found dead in a river.

An Ohio grandmother is strangled; a Dallas man is shot to death while in the back of his car.

New Orleans detectives discover a house of horrors during their investigation into a fatal slashing.

A New Orleans detective probes the case of a young mother who was beaten to death in her home.

A promising high-school senior is shot to death and stuffed into the trunk of his car a week before Christmas.

Detectives from Tennessee, Minnesota and Florida recall the most challenging cases of their careers.