The First 48 - Season 20

A man in Tulsa calls 911 claiming that his girlfriend shot and killed herself, but detectives discover evidence suggesting foul play.

In New Orleans, detectives make a gruesome discovery inside a car that was set on fire; Det. Ryan Vaught hopes the last person who spoke to the victim can lead him to the killer.

In Tulsa, a father of two is gunned down in broad daylight when an attempt to stand up for his cousin backfires. When an unidentified woman found shot and burned resembles a suspect in a recent home invasion, New Orleans detectives suspect a connection.

In St. Louis, a man is shot in his apartment with only his girlfriend with him, but she claims she had nothing to do with it.  In Tulsa, detectives need a childhood friend of the victim to tell the truth about the shooting in front of her home.

When two young men are shot and killed in a car, Gwinnett County Homicide turns to the survivors to learn the truth about what led to the shooting.

Tulsa detectives investigate the Neighborhood Crips to solve the murder of a young man trying to leave the gang.

In Tulsa, a mother of five is killed after a roadside argument spins out of control; In Mobile, a security guard tries to keep the peace and ends up brutally murdered.

Tulsa homicide detectives must find a possible victim by getting her killer to lead the way; A young Mobile man is found shot in a car minutes after another man gets ambushed.

In Tulsa, a woman is found dumped in a hospital parking lot after someone she trusts crosses the line; In Mobile, a jealous rage leaves a father of nine dead and threatens to tear his family apart.

In Tulsa, detectives investigate the murder of a man with a troubled past, and they uncover a sinister plot.

In Tulsa, a young man stands up for his girlfriend and pays the ultimate price; A man is gunned down in front of his girlfriend after someone from her past goes over the edge.

In Tulsa, a quadruple shooting leaves two people dead as a vigilante seeks payback for his house being targeted in a drive-by shooting; In Mobile, a man is shot in front of his fiancee as a dispute over money takes a deadly turn.

In Tulsa, a father of three is gunned down after an argument, and the instincts of veteran detective Jason White are put to the test.

Mobile Homicide tracks a killer who shot a man in his home but learns not everything is what it seems.

In Mobile, Detective Jermaine Rogers hunts for multiple perpetrators of a home invasion that left two dead.

In Mobile, a professor of economics is found shot dead outside his bedroom door when he doesn't show up for class.

A father of four is gunned down while defending his girlfriend during a brutal home invasion.

In Mobile, the homicide team takes on a missing persons case when new evidence points to foul play.

A young college student's life takes a tragic turn after he falls under the influence of a mysterious friend.

A young man is shot down while walking home and rumors swirl about who could have wanted him dead.

Police investigate a shooting that occurred at a crowded park, and they rely on the public to determine what led to the deadly incident.

A father of three children confronts a hit-and-run driver and is subsequently shot, so Mobile homicide detectives attempt to track down the killer.

In Tulsa, Okla., a homeless woman and her boyfriend are taken in by a friend; when he ends up dead, they have to choose between saving themselves and doing the right thing.

Tulsa Homicide tackles its most difficult unsolved case, spanning multiple suspects and several years.

In Tulsa, two families devastated by domestic violence look to detectives to find justice for their loved ones.