The First 48 Season 21: Episode Guide & Ratings

Two murders within hours of each other at the same apartment complex leave Mobile Homicide scrambling to find the culprits.

Five young lives are ruined when a plan to score some easy money goes horribly wrong.

In Tulsa, one man is killed, and another is injured when a dispute over stolen marijuana plants turns deadly.

When a teenager is found shot and dumped in the street, detectives struggle to figure out who he is and where he was killed.

In Gwinnett County, Ga., a young man is caught in the crossfire when his 21st birthday spins out of control.

When a man is found shot to death in the back of his truck, detectives hope a dating app is the key to finding his killer.

In Atlanta, a young man is missing and presumed dead after a mysterious turn of events. In Tulsa, a mother-to-be shields a potential killer.

Tulsa detectives head to Texas to chase down two suspects after they kill a young father of two.

In Tulsa, Oklahoma, Detective White needs a former student to tell the truth about a shooting at an apartment complex. In Gwinnett, Ga., a man is shot in front of his friend as a robbery takes a deadly turn.

In Gwinnett County, a veteran and a rookie detective untangle a web of lies as they work to solve a young woman’s mysterious death. Can they untangle a web of lies in time to reveal the killer?

In Mobile, Ala., when a homeless woman is found executed in an alley and a father of five is shot dead in a desolate area, detectives rely on clues from one case to help solve the other.

In Atlanta, a young man is killed in an apartment when a scheme to make easy money goes wrong; a beloved mother is murdered in a drive-by shooting leading St. Louis detectives to a neighborhood turf war.

When a man is shot on the side of the road, clues lead Detective Jason White to an ongoing crime spree, in his 100th case for Tulsa Homicide.

In Gwinnett County, a beloved special education teacher is gunned down in broad daylight when the suspects' plan to score some easy money spins out of control.

Desperate to stop the senseless shootings in her community, Detective "KeeKee" Taylor must find out why the latest teen victim was wearing a ski mask when he was killed.

A man living at an extended-stay hotel is shot dead in his room after a night of gambling with friends turns into more than anyone bargained for. In Mobile, a young woman helps a friend in need and pays the ultimate price.

In New Orleans, a 17-year old high school student is shot over a gaming controller on his way to school. In St. Louis, a woman is murdered in broad daylight and the main suspect is found nude walking down the street. When surveillance footage shows a man carrying a box moments before he is shot, Detective Tracy Casey must determine if the box's contents holds the key to determining motive. In Tulsa, Detectives must decide if a duo responsible for an all night car-jacking spree ended in the gruesome murder of a single father.

When a homeless man is found dead and an accidental death seems most likely, Detective Ryan Vaught must convince the squad it’s cold blooded murder. In New Orleans, when a new father is brutally gunned down, Detective Drew Deacon’s only lead is pinned on something the killer left behind. Detectives investigate on the highway when a driver is hit by AK-47 gunfire from another vehicle. After two young men are killed, Detective Nick Williams tries to get their friend to change his ways before he becomes another victim.

In New Orleans, when an eyewitness points out a potential suspect at the crime scene, Detective Nick Williams must determine if they have the right guy. New Orleans detectives prepare to face an armed gunman suspected to be hiding in his apartment after killing two men on his doorstep. When a man is randomly shot in front of his sister’s house, a disturbed neighbor may be the most likely suspect. In Mobile, when a bleeding young father is found by his friends, detectives are surprised to discover who pulled the trigger.