The First 48

Det. Rick Duggan investigates the murder of a young man shot in the backseat of his friend's car in Dallas. While scouring the crime scene, Duggan finds an interesting lead -- mail -- and hopes the clue will lead him to the killer.

Detectives John Dorer and Kathi Kelley's investigation is hampered when they arrive at the murder scene of a young man gunned down behind an apartment complex in Tucson, AZ.

In Dallas, Detectives Randy Loboda and Scott Sayers investigate the murder of a 54-year-old family man who was gunned down in his home in front of his wife and children.

Det. John Dorer and his team investigate the gruesome murder of a 58-year-old woman found naked under a Tucson, AZ, highway overpass with a satanic symbol written in blood near her body.

In Minneapolis, a young man is robbed and killed while meeting up with a girl he met on a bus. Sgts. Christopher Gaiters and Robert Dale need to find out if the murder was a random act of violence or if the girl set him up.

A college student is stabbed to death while getting on his scooter to ride home after a night out with friends in Minneapolis.

A Sudanese man who fled genocide in Darfur is shot to death while working in his clothing store in Louisville, KY. When the store's surveillance video fails to identify the suspects, Det. Rick Arnold must hit the streets and pursue every possible lead.

Detectives Jerry Williams and Chris Anderson investigate the murder of a man found dead in the back of his burning pickup truck in Birmingham, AL. With most of the physical evidence destroyed, detectives must track down the people who were last seen.

Miami Sgt. Armando Aguilar and Det. Leo Tapanes are assigned the homicide case of a 20-year-old Rastafarian who was shot and robbed on Christmas Day. Surveillance footage and leads from the community help the detectives identify three suspects.

A man is found dead on a residential sidewalk after celebrating his 46th birthday with family in Miami.

Det. Chris Anderson works to unravel the mystery of a motorcycle club president shot in the head in Birmingham, AL. Then, Det. Corey Cadwell races against the clock to catch the killer of a mother strangled to death in Louisville, KY.

Detective Chris Anderson and the homicide team investigate the brutal murder of a young woman shot to death in a park in the middle of the day in Birmingham, AL.

When a 21-year-old father is gunned down in a Louisville, KY, parking lot in broad daylight, Det. Keith Roberts begins investigating one of the most brazen murders he has ever seen.

Rookie detective Kristen Downs tries to untangle a love triangle that turned deadly in Louisville, KY. Then, lead detective Scott Sayers and his team must piece together what happened inside a car that left the driver dead in Dallas.

A 33-year-old woman collapses in the street after being stabbed multiple times in Louisville, KY. When detectives arrive at the crime scene, they're startled to discover they're familiar with the victim.

Det. Marcel Walker works to unravel the mystery of a 28-year-old man shot in his home in Birmingham, AL. After calling 911 from inside the victim's home, a woman suspiciously flees the scene.