The First 48

In Dallas, Det. Rick Duggan investigates the murder of a young man shot in the backseat of his friend's car. And in Minneapolis, Sgts. Bruce Folkens and Chris Karakostas must find the person who savagely beat a homeless man to death.

When Tucson Detectives John Dorer and Kathi Kelley arrive at the murder scene of a young man gunned down behind an apartment complex, their investigation is hampered.

In Dallas, Detectives Randy Loboda and Scott Sayers are investigating the murder of a 54-year-old family man.

In Tucson, Det. John Dorer and his team investigate the gruesome murder of a 58-year-old woman found naked.

In Minneapolis, a young man is robbed and killed while meeting up with a girl he met earlier on a bus.

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

In Louisville, a Sudanese man who fled genocide in Darfur is shot to death while working in his clothing store.

In Birmingham, Detectives Jerry Williams and Chris Anderson investigate the murder of man found dead in the back of his burning pick-up truck.

Miami Sgt. Armando Aguilar and Det. Leo Tapanes are assigned the homicide case of a 20-year-old Rastafarian, shot and robbed on Christmas Day.

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

In Birmingham, Det. Chris Anderson works to unravel the mystery of a motorcycle club president shot in the head after being run off the road.

In Birmingham, Detective Chris Anderson and the homicide team investigate the brutal murder of a young woman.

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

In Louisville, rookie detective Kristen Downs is trying to untangle a love triangle that turned deadly.

In Louisville, a 33-year-old woman collapses in the street after being stabbed multiple times.

In Birmingham, Det. Marcel Walker works to unravel the mystery of a 28-year-old man shot in his home.

In Louisville, a 45-year-old man is found gunned down in the snow. Det. Rick Arnold and his team track down a key witness who is forced to chose between her friendship with the suspect and her own freedom.