When a former Marine is gunned down trying to recover his stolen bicycle, Tulsa Detective Matt Frazier goes on the hunt for an elusive criminal family.

In New Orleans, a double-shooting on Bourbon Street has the city on edge. And in Tulsa, a man killed by a shotgun blast may have been lured into a trap.

When a young mother is found naked and strangled in her car, Tulsa Detective John Brown uncovers a dark obsession that may have turned deadly leading to the incident.

In Tulsa, a young mother of four is found shot on the side of the road. Detectives' only clue is a photograph she took just moments before her murder.

In Tulsa, an innocent mother is viciously murdered with a butcher knife. While in Atlanta, a beloved patriarch is gunned down when a game of dominoes turns deadly.

In New Orleans, a man is executed in broad daylight, and Detective Ryan Vaught must battle fear and distrust on the street to identify the killer.

When a young man is shot to death at a motel party, Tulsa Detective Justin Ritter discovers a photo posted on Facebook may have triggered a dangerous chain of events.

In this episode of The First 48, in Atlanta, a caretaker is gunned down over a grudge. And in Tulsa, a young man loses his life when a bully goes too far.

After a young woman has a deadly premonition, the New Orleans homicide team discovers her killer may have killed before.

In this episode of The First 48, in Atlanta, a brash and senseless murder in front of an elementary school turns up a familiar name to detectives during the investigation.

In this episode of The First 48, when a young man is found shot dead in his van, Tulsa Homicide retraces his final hours and gets caught up in a web of lies.

In Minneapolis, when a young Somali girl is executed in bed, Sergeants Charlie Adams and Chris Thomsen uncover a secret relationship that may have turned deadly.

When a father is gunned down protecting his wife in Kansas City, Detectives hope his ex-wife knows who wanted him dead.

In Tulsa, a young woman goes on the run when her boyfriend is murdered. In Atlanta, an army veteran is gunned down after helping a homeless man.

In Atlanta, when a young man is shot and left to die in the bushes, a mysterious white Town Car will be the key to Detective Calvin Thomas's investigation.

A night out leaves an innocent man dead. When solid leads hit dead ends, detectives discover a motive they never expected.

In New Orleans, when a new father is brutally gunned down, Detective Drew Deacon's only lead is pinned on something the killer left behind.

In Tulsa, a man is gunned down in broad daylight, but the truth may be more than it appears. In New Orleans, a man is shot 8 times in his own home when a text message falls into the hands of a killer.

When a shootout in an Atlanta rap studio leaves two men dead, detectives discover a vengeful motive.

When a suburban teenager is found dead in a robbery gone bad, Minneapolis Detective Emily Dunphy must find out which of the victim's friends may have double-crossed him.