The First 48

In Tulsa, a vicious hammer attack leaves two young men clinging to life. Detectives race to catch the suspect before he strikes again.

Homeless man's shooting leads to discovery of petty motive.

In Tulsa, Detective Leatherman tracks a sadistic killer who murdered the brother of a man who stole his truck.

A father gone missing turns up dead, when his plans to evict a tenant ignites a murderous rage.

In Tulsa, an act of vengeance leaves an elderly woman beaten and stabbed to death in her home.

When a man is murdered just before Christmas, his family helps Tulsa detectives search for his killers.

In Tulsa, a man shot and killed when a stranger sees an opportunity too good to pass up. In Atlanta, an escalating argument ends with one man dead and the other in danger.

In Atlanta, a parking lot drug deal turns into a shootout that leaves two men dead.

In Atlanta, when a young man is shot from 235 feet away, Detective Darrin Smith discovers an escalating feud that threatens to tear apart a neighborhood.

In Mobile, when a 90-year- old war hero is shot in the back, detectives discover his former neighbor may hold the key to what went down.

A late-night shooting in North Minneapolis leaves one man dead and another alive to help detectives identify the killer.

In New Orleans, when a man is robbed and shot multiple times on his payday, Detective Rob Barrere has a hunch this isn't just a random robbery gone wrong.

In Minneapolis surveillance cameras at a convenience store capture more than just a shooting.

Star witness in New Orleans may be lying. Self-inflicted shooting in Tulsa questioned. Homeless man's murder in Mobile is personal.

When a young mother and her friend are murdered in front of her children, Tulsa detectives hope a suspicious vehicle will lead them to the killer.

Minneapolis detectives seek witness in double family murder; young woman dead in dumpster after fiancé's fate uncovered in Tulsa.

In Atlanta, a teenager's life is cut short over a neighborhood beef. In Tulsa, a young woman goes missing and her family fears she was murdered.

In Tulsa, when a man driving down the street is gunned down, Sgt. Dave Walker questions local youths who tried to break into the victim's house.

In Tulsa, a high-school football player is gunned down when his friends make a dangerous decision.

In Tulsa, an unsolved case comes to life when new evidence sheds light on a dead man's friend.