The First 48

After an argument in his home, a man answers a knock at his front door and is suddenly shot and killed.

In Tulsa, a late night party turns into a blood bath, but a Facebook video may help dispute a suspect's claims. In New Orleans, a man is robbed and shot multiple times on his payday. A late-night shooting in North Minneapolis leaves one man dead.

In Tulsa, detectives must decide if a duo responsible for a car-jacking spree ended in the gruesome murder of a single father. In New Orleans, when a new father is brutally gunned down, the only lead is pinned on something the killer left behind.

In Mobile, a brazen gunman shoots another man in front of gas station security cameras. In Gwinnett County, detectives race to identify a woman shot on the side of the road and track down her killer.

In Mobile, a father of four is found dead inside a car after a mysterious crash, and detectives discover that his death was no accident.

When a young soccer player is shot dead and dumped on a Gwinnett County street, Corporal Ryan Jorstad hopes retracing the man's steps will lead him to the killer.

When a man is lured into a deadly trap, detectives must turn the tables on the suspects before they strike again.

Tulsa police find a woman beaten to death during a welfare check and a son witnesses his father's murder while renovating a house.