The First 48 - Season 20 (2021)

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.

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

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 just minutes after another man gets ambushed.

In East Tulsa, a young man stands up for his girlfriend and pays the ultimate price. Then, a West-Tulsa man is gunned down in front of his girlfriend when someone from her past goes over the edge.

Detectives investigate murders in Kansas City, Kansas, Atlanta, Georgia, Mobile, Alabama, and Tulsa, Oklahoma.

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 they learn 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, Alabama, the homicide team joins a missing person case when evidence of foul play surfaces.

Atlanta homicide detectives investigate the death of a college student who was befriended by a mysterious person.

Homicide detectives in Mobile, Alabama investigate the death of a young man who was walking home.

Homicide detectives in Tulsa, Oklahoma investigate the killing of two people in a crowded park.

Mobile, Alabama detectives investigate a homicide related to a hit-and-run incident.

Homicide detectives in Tulsa, Oklahoma investigate the death of a man who provided shelter to a homeless couple.

Tulsa, Oklahoma homicide detectives tackle a difficult investigation spanning several years with multiple suspects.

Tulsa, Oklahoma detectives investigate two cases related to domestic violence - one a double homicide.