A surveillance camera on a bus captures a shooting outside a Minneapolis church; the footage leaves police detectives wondering if the shooter acted in self-defense.

When investigating a young man found shot in his driveway, a police detective uncovers a revenge plot that may have left the wrong person dead.

New Orleans homicide detectives investigate a case of fratricide, and find themselves in a standoff with the killer.

A 40-year-old man is ambushed and killed on the streets of New Orleans; a police detective's only hope of finding the killers is a fearful witness.

An Atlanta police detective must rely on the public for help after an aspiring boxer becomes the target of a random killing.

Searching for answers about a young man shot dead at a construction site with no witnesses and no cameras on the scene, the lead detective takes to the streets.

In Atlanta, a case involving two brothers shot dead in their home leaves Detective Scott DeMeester with little to go on, but then his only potential suspect suddenly wants to talk.

After the member of a second line club is killed, New Orleans detectives hope a matching bullet casing from a different crime scene will lead them to the shooter.

After an Atlanta father of two is gunned down with an AK-47, rookie detective Scott Berhalter must sift through lies and alibis to put his killers behind bars.

Detective Summer Benton follows a string of crimes as she probes the drive-by shooting of an Atlanta father.

A home invasion leaves a father shot dead and a detective hoping for answers; investigators in Atlanta hope that witnesses to a triple shooting can provide clues; a homeless man found dead.

A man is killed in a motel in New Orleans and a man is stabbed 21 times in Tulsa following a night of drinking.

A police detective suspects that the seemingly accidental death of a homeless man may actually be a case of cold-blooded murder.

A caretaker is gunned down in Atlanta and a case of bullying goes too far in Tulsa.

After a young man gets shot to death at a motel party, Tulsa Detective Justin Ritter discovers a photo posted online that may have triggered a dangerous chain of events.

A New Orleans detective battles fear and distrust on the street as he works the case of a man who was executed in broad daylight; a Minneapolis man witnesses the murder of his teenage son.

A killer viciously stabs a mother with a butcher knife in Tulsa, Okla.; a game of dominoes leads to gunfire, claiming the life of a beloved patriarch in Atlanta.

A young mother in Tulsa, Okla., is found shot dead on the side of a road; a photograph taken immediately before the murder provides police with their only clue.

Tulsa, Okla., police believe that a dark obsession may have turned deadly as they probe the case of a young mother found naked and strangled in her car.

A Tulsa, Okla., detective pieces together fragmented accounts from five potential witnesses as he investigates a crime involving a lethal combination of guns and meth.

A double killing on New Orleans' Bourbon Street leaves the city on edge; Tulsa, Okla., detectives believe that a shooting victim may have been lured into a trap.

A transgender woman is shot four times during an apparent robbery in New Orleans; two Atlanta men draw weapons in an underground mall.

A Tulsa, Okla., detective hunts a family of elusive criminals after a former Marine is fatally shot while trying to recover his stolen bicycle.

The target of a drive-by shooting in Tulsa, Okla., walks away from the attack, while his girlfriend is not so fortunate; police uncover a long-simmering feud as they hunt for the killer.

An Atlanta man is gunned down in his home by an AK-47; the victim's wife holds a dark secret that could tear the family apart.

A New Orleans father and his friends are ambushed while sitting in a parked car; a feud between households in an Atlanta apartment complex leads to the killing of a promising boxer.

The case of a young New Orleans mother who was ambushed at home and shot hinges on the eyewitness account of a 4-year-old girl.

A young New Orleans mother is found shot and burned in the trunk of her car following a night out on the town.

Viewers witness a murder trial through the eyes of the jury, as the prosecution and the defense present two different views of a fatal shooting on a Florida beach.

Veteran homicide Lt. Rick Zimmerman recalls the case of a woman and two young boys who were tortured before being brutally murdered.

A Tennessee family is attacked by a vicious home intruder; a rookie detective and his veteran partner probe the case of a severed head found in the Florida Everglades.

A man is shot to death while visiting his son in Tulsa, Okla.; a home invasion in Atlanta that killed a teenager and wounded two others may have been a contract killing.

A New Orleans woman is found stabbed to death and stuffed in a trash bin the day before Thanksgiving; an Atlanta man's friend and girlfriend become suspects in the case of his fatal stabbing.

New Orleans police search for the killer of a hip-hop promoter; a night of drinking turns deadly at a Tulsa, Okla., senior center apartment.

Police must wade through a web of secrets and lies when a man is found dead in his Tulsa, Okla., hotel room.

A welder vanishes and detectives suspect foul play as they investigate his surrounding life.

A violent attack in a Tulsa, Okla., barbershop leaves an employee dead and numerous people wounded; the hunt begins for a killer with an AK-47 assault rifle.

In Atlanta, Georgia U.S.A. a young father is gunned down by a brutal robbing crew and Detective Tracy Lewis discovers on her first case that she may be chasing the wrong suspect.

When a young woman is executed on a street corner in Tulsa, investigator Nathan Schilling discovers her friends may be hiding information about the murder.

A detective in Atlanta (GA) investigating a cold-blooded murder learns that another recent shooting victim may be related to his case. Are these two incidents related or is he working his first serial killer case?

In New Orleans (LA), detectives try to solve a shooting on a busy street that leaves one young woman dead and eight others injured, but they encounter reluctant witnesses who may have something to hide.

An Atlanta woman is found naked and strangled to death in an abandoned house; the investigation into the crime reveals more disturbing facts.