Detectives Mike McCleery and Bob Bachelder investigate the murder of a promising high school senior, shot to death the week before Christmas and stuffed in the trunk of his car, 25 miles from home.

In New Orleans, when a young mother is found beaten to death in her home, Detective Greg Johnson must fight to prove he has enough evidence against her killer, before he walks free.

Detective Chris Anderson and the homicide team investigate the brutal murder of a young woman shot to death in a park.

New Orleans Detective Ryan Vaught takes on his most challenging case yet when a young married couple goes missing and one of them is found floating in a river, drowned to death.

After a number of women are murdered in East Cleveland, residents fear a serial killer may be on the loose. When a grandmother is strangled and left to die Detectives Bob Ford and Tom Armelli need to find out if her killing is related to the others.

Detectives discover a house of horrors during their investigation into the fatal slashing of a New Orleans woman.

In New Orleans, when a young father is abducted and shot in the street, detective Rayell Johnson hopes shocking surveillance footage can help him crack his first homicide case.

In Atlanta, two men are ambushed at gunpoint and only one survives to tell the tale. A mother is found stabbed to death on the side of the road, but a wedding ring dropped at the scene could break the case.

A young woman in Mobile is found dead behind an abandoned building, and detectives need her boyfriend to help solve the case. A young father's murder case sends Atlanta detectives to the Poconos Mountains in search of his killers.

A shy mechanic is found shot dead far from home, outside a notorious apartment complex. Detective Max Ryden needs to discover what brought him there.

In Tulsa, a father is gunned down in a car park by a killer lying in wait. In Mobile, an elderly man dies from a suspicious fire in his apartment.

In Tulsa, a homeless man is beaten and stabbed to death, leading detectives to witnesses that live under the bridge where he was discovered.

In Atlanta, a stranger guns down a new father in a car park. In Gwinnett County, a man is stabbed more than 20 times when someone he trusts turns against him.

Tulsa homicide 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 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.

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 fiancée as a dispute over money takes a deadly turn.

Mobile Homicide track 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.

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

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

When three people are gunned down in a quiet neighbourhood, Gwinnette County police struggle to find a connection between the victims.

Old habits die hard when a young father gets out of prison and is drawn back into his old life. After he's shot dead, Tulsa homicide must sort through a web of lies to find out who killed him.

In Mobile, when two beloved men from the Mobile Terrace neighbourhood are gunned down, detectives need the community's help to get justice for their families.

In Tulsa, Oklahoma, a man is found shot and dumped on a street.

A young father goes out to party and ends up murdered at a club.

When a man is gunned down while walking his dogs in a quiet park, surveillance video leads detectives to an unlikely suspect.

In Mobile, Alabama, a gun buy between two teens leaves one dead and the other charged with murder.

For homicide detectives, the clock starts ticking the moment they are called. Their chance of solving a case is cut in half if they don't get a lead in the first 48 hours.

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

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, Georgia, a young man is caught in the crossfire when his 21st birthday spins out of control.

A teen is found shot and dumped on a street. Detectives struggle to identify him and where he was killed.

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

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.

In Mobile, a man is gunned down in front of his family, and it's up to Det. Jermaine Rogers to sift through differing accounts of the incident to find the truth.

When a man is found inside a truck, stabbed 45 times, a bilingual Tulsa community comes together to help Detective Mark Kennedy identify the victim and track down his killer.

A young man is murdered while defending his friends during a home invasion. Retired Detective Ronnie Leatherman hands off the case to Detective Lacy Lansdown, who must now seek justice for the man's family.

Detective Angela Carter takes over the case of a missing teenage girl and wonders if the key to her disappearance could lie shockingly close to home.

In Tulsa, detectives scour the city for a man on the run while trying to uncover the truth behind a woman's mysterious injuries.

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

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.

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

When a man is found shot dead in his driveway, an abandoned truck leads Tulsa Homicide to several potential suspects, but not everything is as it seems.

In Mobile, a street fight escalates to a shooting that leaves a man dead on his front yard. In Tulsa, a drive-by shooting stemming from a gang feud claims the life of a 16-year-old girl, while her boyfriend clings to life.

When a young man and his pregnant fiancee are executed after a failed ransom attempt, Atlanta Homicide will stop at nothing to identify the elusive suspect.

In Atlanta, a woman is found dead in a rubbish bin, and a young man is ambushed by neighbourhood bullies.

In Atlanta, a stranger guns down a new father in a car park. In Gwinnett County, a man is stabbed more than 20 times when someone he trusts turns against him.

A young woman in Mobile is found dead behind an abandoned building, and detectives need her boyfriend to help solve the case. A young father's murder case sends Atlanta detectives to the Poconos Mountains in search of his killers.

In Mobile, a 21-year-old woman is shot dead in her hotel room by a mysterious visitor. When a 42-year-old music producer is found riddled with bullets in his Gwinnett County apartment, clues point toward a madman on a shooting spree.

In Atlanta, when a young father is found dead in his home by his girlfriend, detectives track down the killer and find things are not as they appear. In Tulsa, a teenager is fatally shot, sending the team on a desperate search for the motive.

A shy mechanic is found shot dead far from home, outside a notorious apartment complex. Detective Max Ryden needs to discover what brought him there.

In Tulsa, detectives have little to go on when they find the naked body of an unknown homeless woman who was raped, strangled to death and thrown into a dumpster.

In Tulsa, detectives struggle to find a lead when a beloved grandfather is gunned down in his own home.

In Tulsa, a father of three is gunned down in front of his family during a deadly crime spree. Detectives race to track down his killer before anyone else gets hurt.

In Tulsa, two brothers are shot down after checking on their night cleaning crew. Detectives struggle to find a motive before the killer strikes again.

In Tulsa, a father is gunned down in a car park by a killer lying in wait. In Mobile, an elderly man dies from a suspicious fire in his apartment.

In Tulsa, a homeless man is beaten and stabbed to death, leading detectives to witnesses that live under the bridge where he was discovered.

Tulsa Homicide delves into a dark world of drugs and prostitution to solve the murder of a man executed in his car in a motel parking lot.

When a stray shot leaves an innocent man dead in his home, Tulsa detectives discover a neighbourhood under siege by young terrors. They race to track down the killers before more blood is shed.

When a Tulsa man is gunned down at the wheel of his car, detectives turn to a passenger who saw it all. A 20-year-old man in New Orleans is shot down minutes after his mother gets a warning about the murder.

In Cleveland, a young father is murdered in his car and detectives discover his friend may know who pulled the trigger. In Tulsa, the homicide team goes on the hunt for a shotgun-wielding killer who tore a family apart.

When an innocent father is brutally stabbed, Tulsa Detective Justin Ritter delves into the dark and dangerous world of methamphetamine addiction in order to stop a killer on the edge.

In Tulsa, a young woman is brutally gunned down in broad daylight. Detective Justin Ritter suspects the witnesses know more than they are saying.

In Atlanta, a young father is gunned down in cold blood at an abandoned car wash. As Detective Dwayne Sutton starts to learn that the trail may lead to the 'Bloods' gang.

In Atlanta, the brutal murder of a foreign exchange student is caught on video. In New Orleans, a shooting at a car wash becomes a family affair.

When a young woman is executed on a street corner, Tulsa investigator Nathan Schilling discovers her circle of friends may all be connected to the murder. He must uncover their secret, before a killer goes free.

In Atlanta, a young woman is found on the floor of an abandoned house, naked and strangled to death. As the investigation unfolds, further horrors are revealed and Detective Scott DeMeester must act fast before his suspect kills again.

In Tulsa, a vicious assault on a crowded barbershop leaves multiple people wounded and an innocent barber dead. Detective John Brown delves deep into a dangerous world of gang violence to catch a killer on the loose with an AK47 assault rifle.

In New Orleans, a mass shooting on innocent bystanders and tourists leaves the city demanding answers. The homicide team use shocking surveillance footage of the crime to piece together what happened.

In Tulsa, a man from out of town is found dead in his motel room and Detective Michael Zenoni must wade through a web of secrets and lies to uncover the truth.

When a hip-hop promoter is gunned down, Detective Clinton Givens' search for the killer gets him more than he bargained for. In Tulsa, a friendly night of drinking leaves one man dead and another wounded. Detective Mark Kennedy must find a third man.

In Tulsa, a father is shot dead while visiting his son, and Detective Justin Ritter discovers the child's mother holds the key to the case. In Atlanta a teenager is killed and two are wounded in a home invasion.

In New Orleans, a young mother is ambushed at home and shot at close range. Detective Rob Barrere's case depends solely on the eyewitness account of a four-year-old girl and leads to another brutal death.

In New Orleans, a young father is cut down by a hail of bullets when he and his friends are ambushed. And in Atlanta, feuding households within the same apartment complex collide, leaving a boxer dead and his brother bent on revenge.

When a man is gunned down with an AK-47 in his home, Atlanta Detective Kevin Leonpacher discovers the victim's wife holds a dark secret that could tear their family apart.

In Tulsa, a young woman is killed in a drive by shooting, while her boyfriend - the apparent target - walks away unscathed. Leatherman talks to a group of teenagers and delves into a long simmering feud to find her killer.

When a suburban teenager is found dead in a robbery gone bad, Minneapolis detective Emily Dunphy must find out which of the victim's friends may have double-crossed him.

When a young mother is found naked and strangled in her car, Tulsa detective John Brown uncovers a dark obsession that may have turned deadly.

In Tulsa, a young mother of four is found shot on the side of the road. Detectives' only clue is a photograph she took just moments before her murder.

In Tulsa, an innocent mother is viciously murdered with a butcher knife. In Atlanta, a beloved patriarch is gunned down when a game of dominoes turns deadly.

When a young man is shot to death at a motel party, Tulsa Detective Justin Ritter discovers a photo posted on Facebook may have triggered a dangerous chain of events.

In New Orleans, a man is executed in broad daylight, and Detective Ryan Vaught must battle fear and distrust on the street to identify the killer.

New Orleans Homicide works the stabbing death of an infamous local criminal. In Minneapolis, a squabble amongst friends leaves a woman brutally murdered in a bus station.

In Tulsa, a man is gunned down in broad daylight, but the truth may be more than it appears. Meanwhile in New Orleans, a man is shot eight times in his own home when a text message falls into the hands of a killer.

A night out leaves an innocent man dead. When solid leads hit dead ends, detectives discover a motive they never expected.

When an argument at a local bar ends with a young social activist shot 16 times, Tulsa Detective Ronnie Leatherman searches for answers in a divided community.

In Tulsa, when a man is shot and run over by a car, Detective John Brown must cut through conflicting stories to separate friend from foe.

For homicide detectives, the clock starts ticking the moment they are called. Their chance of solving a case is cut in half if they don't get a lead in the first 48 hours.

For homicide detectives, the clock starts ticking the moment they are called. Their chance of solving a case is cut in half if they don't get a lead in the first 48 hours.

In Atlanta, when a young man is shot and left to die in the bushes, a mysterious white Town Car will be the key to Detective Calvin Thomas�s investigation.

A night out leaves an innocent man dead. When solid leads hit dead ends, detectives discover a motive they never expected.

When a shootout in an Atlanta rap studio leaves two men dead, detectives discover a vengeful motive.

When one of their own is executed in cold blood, detectives discover he may not be the killer�s first victim. Can New Orleans homicide stop a suspect who targets the law before more blood is shed?

In Tulsa, a running street battle leaves a young father dead. And in Atlanta, a man defending his mother�s honour is shot in the back.

In Tulsa, a vicious hammer attack leaves two young men clinging to life. Detectives race to catch the suspect before he strikes again. In Atlanta, detectives discover a selfless act performed by their victim led to his murder.

A man is shot and killed in Tulsa, while in Atlanta an escalating argument ends with one man dead and another in danger.

In Atlanta, a car park drug deal turns into a shootout that leaves two men dead. In Tulsa, an execution outside a motel escalates into a double murder when the killer spots a witness.

In Atlanta, a father is killed when a man opens fire in a crowded convenience store. In Tulsa, a young man about to be married is gunned down before he can turn his life around.

In the Minneapolis double murder of two family men, detectives need a man who was there to come clean. Then, in Tulsa, a young woman is found dead in a dumpster after she discovers the fate of her fiance.

In Atlanta, a teenager's life is cut short over a neighbourhood beef. In Tulsa, a young woman goes missing and her family fears she was murdered.

In Tulsa, a high school football player is gunned down when his friends make a dangerous decision. Detectives must separate witnesses from suspects to find out who fired the fatal bullet.

In Tulsa, an unsolved case comes to life when new evidence sheds light on a dead man's friend.

In Harris County, a woman is found bound by the side of the road. As Sergeant James Dousay works on the case, he discovers that he may be looking for a serial killer.

When a man is found shot dead in his driveway, an abandoned truck leads Tulsa Homicide to several potential suspects, but not everything is as it seems.

A young man is gunned down at a troubled apartment complex that comes under federal investigation after a rap video goes viral.

When a young man and his pregnant fiancee are executed after a failed ransom attempt, Atlanta Homicide will stop at nothing to identify the elusive suspect.

In Atlanta, after his mother reports him missing, a man is found dead, naked and shot twice in his bedroom.

When a potential spree killer targets Tulsa's most vulnerable, Detective Max Ryden must stop the murderer before he kills again.

In Atlanta, a woman is found dead in a rubbish bin, and a young man is ambushed by neighbourhood bullies.

When a father of three is executed on his front porch, Gwinnett County Homicide discover that those closest to him are hiding a dark secret.

In Atlanta, a stranger guns down a new father in a car park. In Gwinnett County, a man is stabbed more than 20 times when someone he trusts turns against him.

In Tulsa, detectives have little to go on when they find the naked body of an unknown homeless woman who was raped, strangled to death and thrown into a dumpster.

In Tulsa, detectives struggle to find a lead when a beloved grandfather is gunned down in his own home.

In Tulsa, a father of three is gunned down in front of his family during a deadly crime spree. Detectives race to track down his killer before anyone else gets hurt.

In Tulsa, two brothers are shot down after checking on their night cleaning crew. Detectives struggle to find a motive before the killer strikes again.

In Tulsa, detectives have little to go on when they find the naked body of an unknown homeless woman who was raped, strangled to death and thrown into a dumpster.

When a man is found shot dead in his driveway, an abandoned truck leads Tulsa Homicide to several potential suspects, but not everything is as it seems.

A young man is gunned down at a troubled apartment complex that comes under federal investigation after a rap video goes viral.

When a young man and his pregnant fiancee are executed after a failed ransom attempt, Atlanta Homicide will stop at nothing to identify the elusive suspect.

In Mobile, Ala., a street fight escalates to a shooting that leaves a man dead in his front yard; in Tulsa, Okla., a drive-by shooting stemming from a gang feud claims the life of a 16-year-old girl, while her boyfriend clings to life.

In Atlanta, a woman is found dead in a garbage can and a young man is ambushed by neighborhood bullies.

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

In Atlanta, a young man comes home for lunch and winds up murdered when he catches a brazen thief in the act. Then, in Tulsa, an ongoing feud between two gang members leads to a fateful encounter.

In Tulsa, when a homeless man is killed after getting run over in a parking lot, detectives work to track down the elusive driver.

Tulsa Homicide responds when a father of three is gunned down at his job by suspects who end up in a standoff with police.

In Tulsa, a teenager is shot dead, and detectives must uncover the truth among his roommates' stories. In Mobile, a young man's murder sets off a retaliatory shooting.

Mobile detectives investigate the murder of a young mother of two and unravel the deadly plot that took her life.

A young man is shot dead in front of his mother's house. Mobile detectives look to his friends and family to find his killer.

In Tulsa, after a man calls 911 claiming his girlfriend shot and killed herself, detectives discover evidence suggesting foul play.

In Atlanta, a young man is shot dead in front of his friends after a bad deal. When a 15-year-old high school student is found on the stairs of an apartment filled with kids, witnesses must tell the truth so Tulsa Homicide can get to their shooter.

In New Orleans, a car is set on fire in a desolate area. Inside, detectives make a gruesome discovery. Detective Ryan Vaught hopes the last person who spoke to the victim can lead him to the killer.

Tulsa detectives need to find out if there is a link between the murders of a pregnant woman and a young man shot at the same apartment complex.

In Tulsa, detectives question whether a young woman's death was a tragic mistake or murder. In Mobile, the murder of a young father tests a bond between brothers.

In New Orleans, a car is set on fire in a desolate area. Inside, detectives make a gruesome discovery. Detective Ryan Vaught hopes the last person who spoke to the victim can lead him to the killer.

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

In Tulsa, a father 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 must turn to the survivors to learn the truth about what led to the shooting.

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.

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

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

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

When a father of three is gunned down after confronting a hit-and-run driver, Mobile detectives struggle to find clues that will lead them to his killer.

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

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

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

In Tulsa, when a teenager is found murdered and dumped in a field, the leads run dry and detectives need help to get justice for his family.

The cold-blooded shooting of a man outside his apartment is caught on video, but detectives must work through the night to identify his masked attacker.

Gwinnett County detectives chase down a bullet-ridden Toyota Camry to find who may have killed a beloved young man.

In a crowded Mobile bar, surveillance video captures the shocking murder of a man after a game of pool.

In Tulsa, a homeless man is ambushed by two men on a dark trail, and his wife may hold the key to finding the killers.

In Tulsa, three people are executed in their ransacked home, and the woman who found them may hold the key to finding the killer.

In Mobile, a father of four is gunned down in a strip club when a chance encounter turns deadly.

When a hard-working construction worker is brutally murdered on payday, Tulsa detectives discover he's fallen prey to a seemingly unlikely attacker.

When a 15-year-old boy is murdered after getting in over his head, detectives hope a Snapchat message can lead them to his killer.

When a love triangle turns deadly, a killer enlists an unusual murder weapon.

In Gwinnett County, two brothers are murdered in their sleep. Detectives suspect they were betrayed by someone they knew.

In a crowded Mobile bar, surveillance video captures the shocking murder of a man after a game of pool.

In Mobile, Detective Julius Nettles works to solve a double homicide while awaiting the birth of his fourth son.

For homicide detectives, the clock starts ticking the moment they are called. Their chance of solving a case is cut in half if they don't get a lead in the first 48 hours.

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.

When a woman's body is discovered in her car on an overgrown lot outside of Mobile, Det. Glenn Barton traces her final steps to find out who or what is ultimately responsible for her mysterious death.