After a father of four is gunned down, police investigate, discovering that nothing about the crime is what it appears to be.

A Las Vegas man claims his wife mysteriously vanished during a visit to a local spy store. Police question the odd story until they make a shocking discovery in a desolate and windblown stretch of the desert.

Will law enforcement ever catch a sexual sadist whose crimes have tormented the state of California for decades?

When a college student goes missing from a mall parking lot, police are convinced foul play is behind her disappearance.

A young woman is murdered inside the video game store she managed by a mysterious intruder.

When a teenager vanishes during a visit to her hometown, it becomes the beginning of a terrifying 30-year mystery.

A mother of three disappears from the home of her wealthy older boyfriend. Investigators question if jealousy is the motive behind the mystery.

A young girl’s killer sends police a series of mysterious riddles and the key to catching him are hidden within the answers.

When a newlywed couple mysteriously disappears, police must piece together a shocking trail of betrayal.

A teenager vanishes from a movie theater parking lot. Forty years later, police from all over the state of California piece together the clues to find her killer.

Patti Berry disappears on the way to pick up her child at the babysitter’s, then her body is found in a secluded wooded area not far from her abandoned blood-soaked car.

The body of a young woman is found in the ashes of a fire. As detectives begin retracing her last-known movements, a suspect comes into focus. But can they connect him to the evidence and bring a killer to justice?

A young woman's lifeless body is found on the bank of a shallow river, and there's a note in her pocket that may point to her killer.

A brutal double homicide shatters two Idaho families. The murders appear to ritualistic, but remarkable police work and insight from loved ones reveals the stunning truth.

A young woman is found savagely murdered in her new home. Will the trail of clues police discovered lead them to her killer?

In Las Vegas, a few teens on their way to school come across an abandoned car with a 41-year-old mother of four handcuffed and murdered in the passenger seat. Investigators have a solid theory of the crime but no suspects until a records clerk in the insurance fraud unit blows the case wide open.

The murder of a beloved and talented church organist sends police on a disturbing search for answers.

A successful car salesman is killed in a hail of gunfire on his front porch. Investigators follow a trail of money that leads them to the mastermind behind the murder.

A mother finds her teenage daughter savagely murdered inside their own home. A few drops of blood discovered decades later could be the key to solving the tragic mystery.

A young woman is found shot to death near a dirt road; police hope the bullet found at the scene will unmask her killer.

When a young woman and her 6-month-old child disappear off the quiet streets of Deerfield Beach, FL, it is the beginning of a terrifying murder mystery.

A convenience store worker is abducted from behind the counter in the middle of the night, becoming the first of three women to disappear from their small town under shockingly similar circumstances.

The body of a teenager is found savagely murdered just steps from her home; when the investigation stalls, police are approached by a brave young woman who is willing to risk her own safety to get justice.

A wave of fear sweeps across Aurora, CO, after two similar crimes are committed just days apart, and police race to stop a hammer-wielding killer before he strikes again.

A young mother is viciously stabbed in broad daylight, and her final words may provide police with the key to catching her killer.

A beautiful young woman is savagely murdered while fishing along the Platte River.

As a 4-year-old girl, Heidi Jones discovered her mother's lifeless body on the living room floor; now, as an adult, Jones guides police on a relentless quest to find her mother's killer.

A young mother inexplicably disappears in the middle of the night only to be found savagely murdered the next morning, prompting police to retrace the tumultuous events of her last night on Earth.

A young woman's search for her birth mother ultimately leads her on a quest for justice.

When a young girl disappears from a quiet suburban street, it marks the beginning of a terrifying game of cat and mouse between police and her abductor.

It takes decades for investigators to follow the evidence to the long-sought-after truth behind the terrifying abduction and murder of 20-year-old Leslie Long, a young mother of three.

After leaving home with a baseball mitt on a sunny afternoon, 14-year-old Barbara Rowan disappears, never to be seen alive again. A neighbor informs the police that she left to speak with her coach, even though she wasn't signed up for a team.

After a young mother goes missing during a Fourth of July weekend, it marks the beginning of a disturbing mystery, one that will devastate a loving family and tear a small community apart.

A young girl's mother reported that her daughter had disappeared while playing outside her mother-in-law's home. Investigators immediately descended on the community, searching cornfields and creeks in the area hoping for clues.

A mother discovers that her young 8-year-old daughter has been abducted from her bedroom in the middle of the night.

Just hours after a popular teenager is reported missing, her lifeless body is discovered under a nearby bridge; police must sort through her puzzling last hours alive to bring a ruthless killer to justice.

After a beautiful young woman vanishes, investigators must sort through a series of puzzling clues to solve a deadly mystery.

A young woman's late-night call from a pay phone is transformed into the scene of a terrifying abduction.

A woman relentlessly investigates her daughter's disappearance leading police to a terrifying string of murders.

Police must retrace a teenager's last known movements if they hope to find out when and where she crossed paths with her killer.

While a predator leaves a trail of destruction in his wake, it may fall to a teenage girl to bring an end to his reign of terror.

While searching for a missing mother, police discover evidence that puts them on the trail of a deadly sexual predator.

When a senior at Ohio State University goes missing, it marks the beginning of a terrifying murder mystery.

A mother arrives home to have lunch with her teenage daughter and walks into a nightmare she will never forget.

After a young mother vanishes, her trail goes cold, then a shocking discovery reveals that history repeats itself.

When a young teacher is murdered in her home, police must rely on the eyewitness testimony of a young neighbor who saw her killer lurking outside her window.

A young mother is strangled to death during her overnight shift at an office building.

A beloved grandmother is savagely murdered during a life-and-death struggle; a family secret may be the key to bringing her heartless killer to justice.

When a hero firefighter is found savagely murdered in his own home, the trail of evidence police find takes them on a twisting and tension filled journey to justice.

When a young girl kidnapped from her bed in the middle of the night is found dead in a nearby canal, it marks the beginning of one of Salt Lake City's most notorious child murder investigations.

After a four-year-old girl finds her mother's lifeless body, police must try to unravel a puzzling mystery. A murder investigation in which they must rule out multiple solid suspects before they arrive at the unlikely killer.

After two sisters are found murdered, police find evidence painting a grim picture of the heartbreaking double homicide.

When a 16-year-old girl disappears on her way to visit friends, the police retrace her last known movements and uncover a terrifying possibility that she may have been kidnapped by an international human trafficking ring.

Police investigate a residential house fire and discover it was intentionally set to cover-up a savage murder. Had the killer managed to destroy all the evidence or was there a clue he overlooked?

When a loving mother is found gunned down just steps from her front door, police in her small town are baffled; as the investigation unfolds their initial confusion will quickly boil over into outrage.

A teenage couple out on a date are ambushed by a gun-wielding madman; the lone survivor's heartbreaking account may hold the key to bringing a cold-blooded killer to justice.

A woman and her teenage daughter are savagely murdered in their own home; police find clues at the crime scene, including a bloody bare footprint and an unharmed 3-year-old girl with a heartbreaking story.

When a young woman is found shot to death in her home, police are baffled; then a cryptic letter from a mysterious source sends the investigation down a twisting road to the truth.

A college student disappears in broad daylight after an afternoon of sunbathing at a busy lake; the mystery deepens when her wallet is found along with personal items belonging to another victim of a violent crime.

When a young woman disappears on a cold night in Breckenridge Colo., one of the state's darkest mysteries begins.

Two girls take a trip to the mall and never come home; less than 24 hours later they are found shot to death in a desolate field; investigators ask whether they were killed by someone they knew or a notorious serial killer.

Investigators look into the case of an elected community official who is found stabbed to death at his own home in Washington DC.

After years of frustration and heartbreak, investigators from three states work together to find the deadly predator responsible for three murders that are connected by one common thread.

When a young woman is savagely murdered in her own home, police must study the bloody crime scene to find the clue that will lead them to her killer.

When police find a beautiful young woman run over by her own car it marks the beginning of a terrifying murder mystery.

A teenager vanishes during a bike ride through Point Defiance Park. The investigation into her disappearance leads police to fear that a serial killer is on the loose in Tacoma.

When a young woman's car is found abandoned on a bridge, police must consider three possibilities. Had she run away, committed suicide, or been the victim of foul play?

An unlikely pair of investigators strive to solve Elaine Fogle's murder after the case goes cold for four decades.

A young schoolteacher is savagely murdered in the doorway of her own home.

Police uncover a trail of terrifying clues while investigating a couple’s disappearance; they come to suspect that the couple has fallen victim to a carefully laid trap in the classified pages of the newspaper.

As investigators study the chilling crime scene inside Wendi Brant's horse ranch, one thing seems clear, the 45-year-old had been brutally killed by someone she knew and trusted.

When an Air Force Major is found beaten to death just outside his home police wonder, was it a random act of violence or was his top-secret job at a nearby military base the motive for his murder?

A beloved detective is killed during a shoot out in at a downtown Atlanta hotel. Can his fellow officers, including his own son, bring the two shooters to justice?

After Michael Brinkman is murdered in his home, police are left to untangle the mystery of why the two masked home invaders stole nothing and left a series of strange clues at the crime scene.

The discovery of the body of a young woman in the tree line of a popular camp site in the Rocky Mountains marks the beginning of a terrifying murder mystery.

A young girl disappears on her way home from school and the only clue police have is a series of terrifying calls her family had received in the days before she went missing.

When the daughter of an FBI agent disappears from an airport parking lot, law enforcement from all over the country rally to find one of their own. But the case quickly becomes one of the bureau's most difficult and heartbreaking investigations.

When a couple enters their home during a robbery in progress, a deadly shoot out erupts, leaving two people dead. But when police begin an investigation they discover clues that it may not have been what it appears to be.

When a popular woman disappears from her home, police work tirelessly to uncover the route of her last known movements. Would a trail of videotape lead them to her killer?

A young woman travels to California in pursuit of a Hollywood dream and winds up the victim of a savage homicide.

A young records clerk at the Seattle police department is murdered on her way to work her overnight shift. Can police find the evidence to catch the killer of one of their own?

An independent young woman starting out in life on her own, becomes the victim of a bizarre and vicious homicide in her apartment.

A young woman getting ready to be a bridesmaid at her best friend's wedding is found viciously stabbed to death in her own home.

Investigators must identify a gunman who murdered a young mother but spared her child asleep in her car seat in the back of her minivan.

A young woman is found stabbed to death locked inside a locker at a storage facility.

A young woman is found drowned in her bathtub and the evidence at the crime scene indicates her killer was someone she knew and trusted.

When a teenage girl is found murdered after a night out with friend, Police must retrace her final steps to find her killer.

When a young mother disappears, a series of text messages from her phone lead police to believe she left on her own. Then, her family uncovers evidence that she may have actually been the victim of foul play.

Two young girls are lured into a deadly trap by a vicious sexual predator. Can the lone survivor of the attack help police bring her best friend's killer to justice?

A daughter's quest to see her birth mother's murder solved is complicated when police discover the prime suspect is in the wind.

A jeep swerves off a dark stretch of road and takes the life of a loving mother. But when law enforcement arrives, they discover evidence that the accident wasn't the cause of her death.

When the body of a teenage girl is found in the Columbia River, police wonder if she was the victim of an accident or suicide. But the evidence reveals it was the beginning of disturbing murder mystery.

The unsolved murder of a teenager torments a small, midwestern city for decades until a relentless team of investigators finally finds the clue that breaks the case wide open.

When a young mother disappears police painstakingly retrace her last known movements. The trail of clues they uncover leads to a shocking and heartbreaking discovery.

In February 1976, 19-year-old Michelle Mitchell vanished from a well-lit parking lot in Reno, NV; the young woman's disappearance would quickly be at the center of one of the most complex and disturbing cases in the state's history.

When a couple is found shot down in front of their home in the suburb of Thunderbolt, the entire community hears the barrage of gunfire. As police sift through the evidence they must determine if one of the neighbours is a witness or the killer.

After a young mother is found murdered in her own home, investigators must untangle a web of lies using wiretaps and secret recordings to ultimately pick up the trail of her cold-blooded killer.

When a 15-year-old girl vanishes from her front porch, police must uncover when she was last seen, where she might have been going, and who would have wanted her dead.

When the lifeless body of a young girl is found on the shore of the Feather River, police hope that following a trail of footsteps and discarded articles of clothing will lead them to her killer.

When a young girl vanishes while walking her dog on a military base, it marks the beginning of a missing persons case that would capture the hearts of the entire county.

An argument among sisters over a new dress leads a young girl to leave her house to calm down. But when she never returns, the desperate search to find her begins.

A teenage lifeguard vanishes from a quiet community swimming hole less than three minutes after her mother dropped her off for work.

A beautiful young mother vanishes just hours before the deadliest hurricane in Texas history; the investigation forces her loved ones to weather a storm and then survive a tempest.

A compassionate and outgoing woman's dream vacation turns into a deadly nightmare when she crosses paths with a wolf in sheep's clothing.

A beloved mother of four disappears just days after her stepdaughter vanished; police investigate their complicated relationship.

After a young girl disappears on her way home from school, police find her blue raincoat thirty miles away. It marks the start of a heartbreaking homicide investigation.

A young woman's strange encounter with a man outside her home becomes the thread that unravels a terrifying murder mystery.

A teenager vanishes during a walk to the store on a cold winter night; the next morning police find her lifeless body in a snowbank six miles away.

When a loving father is found murdered execution-style in his own home, investigators must follow the trail of his missing car to find his cold-blooded killer.

A young girl is murdered in Caledonia, NY, and police struggle to identify her. The tragedy leads the town make her one of their own, with the name Cali-Doe.

A young woman riding her bicycle is forced off the road and savagely murdered. Police chase her killer for decades until an overlooked clue ultimately leads to justice.

A young woman is found bound and strangled to death on the side of a road. As police retrace her final steps, they discover she was last seen being followed by a suspicious man in a cowboy hat.

The murder of a respected health care aide sends a chill through her community. When the investigation reveals several shockingly similar crimes, police realize they've uncovered the trail of a monster.

A tourist takes a photo of vultures in Joshua Tree National Park and inadvertently discovers a gruesome homicide.

When a 15-year-old boy vanished under mysterious circumstances police feared the worst. It appeared the case had terrifying connections to a serial killer who had left a trail of bloodshed across the region.

A 14-year-old girl's mysterious runaway note raises difficult questions for police. Had she really left home on her own or had someone close to her pieced together writing from her journals to cover-up an unthinkable crime.

When a young college student is abducted from her campus parking lot it marks the beginning of a terrifying crime wave on a quiet college campus. Can police catch a serial predator before he strikes again?

After a young girl disappears from her bus stop, a nine-day search reveals that her terrifying abduction has ended in a heartbreaking homicide. As police mount a tireless search to find her killer, the community rallies together to get justice for Angie.

A burned out car and a blood-stained bedroom reveal the chilling murder of a community pillar. Will it be the smallest of clues that lead police to her heartless killer?

A young woman’s disappearance marks the beginning of a heartbreaking murder mystery. Will a clue discovered by a child be the key to catching his mother’s killer?

The abduction of a young mother from a crowded hospital parking lot is the beginning of a terrifying mystery that will torment her loved ones for decades.

When a teenager is found savagely stabbed to death in her home, police hope a trail of blood found at the crime scene will lead them to her killer.

A teenager waiting for her friends to give her a ride home from work suddenly disappears. When her friends arrive, they find terrifying evidence of her abduction.

Police must unravel a puzzling mystery when a beloved father and real estate executive is ambushed in his office.

If investigators can’t find the crack in their suspect’s seemingly air-tight alibi, a cold-blooded killer will elude justice.

After a teenager mysteriously disappears, police must determine if a secret meeting with a young man led to her murder.

After a young woman is viciously murdered, police launch a two-part investigation; one to find her killer and a second to identify his victim, “Precious” Jane Doe.

A young female soldier is found slain after a night out in Colorado Springs, CO. The investigation into her torture, molestation and murder eventually goes cold. It takes decades and advances in DNA processing to finally land her killer and bring him to justice.

Hauntingly Familiar: Investigators must overturn a shocking decision before they can solve the hauntingly familiar murder of a teenager.

Police investigate the gruesome murder of a mother and child, only to realize all the evidence indicates the killer was someone the victims knew and trusted.

A beautiful young woman turns up savagely murdered in a bar parking lot; as investigators retrace her last known steps, several suspects with possible motives come on their radar.

Police wonder if a young woman's personalized license plate, FLRT 12, makes her the target for murder or if a far more sinister plot is behind the crime.

Police find a giant sword bent in half, alongside a victim who has been savagely murdered. Investigators must sort through the details of his complicated life in order bring his killer to justice.

After a loving mother is murdered inside her own home, police focus on their two best clues -- a blood-stained hammer and a dusty footprint.

Veteran journalist Paula Zahn steps out of the studio and into the field to unravel criminal investigations, tracking the drama of each story by featuring the opinions of those closest to the case.

An unidentified woman is found callously murdered in an off-campus apartment; police have no leads on the case until her terrified neighbour shares a chilling story.

The baffling murder of a young woman leads police to two potential suspects: her new boyfriend and an obsessed stalker.

The search for the man who murdered a single mother might lead police to the perpetrator of a second brutal crime with chilling similarities.

A college student disappears, and her family launches a desperate investigation to find her; what they discover changes their lives forever.

A murdered teenager's body mysteriously turns up in the rural Iowa countryside. Will the smallest clue be the key to bringing her killer to justice?

As police try to solve a disturbing homicide, each step of the investigation reveals another layer in a spiderweb of tragedy.

A young mother vanishes, leaving behind nothing but puzzling clues and disturbing questions; a needle in the mud may reveal the truth behind her disappearance.

Paula Zahn talks to investigators, witnesses, victims' families and incarcerated criminals.

Police investigating the brutal murder of a young woman start to wonder if the ambush-style shooting that ended the victim's life resulted from a terrifying case of mistaken identity.

A homicide on May 27, 1994, and its disturbing details devastate 14-year-old Jenny Lin's loving family, leaving the tight-knit community of Castro Valley, CA, to wonder if their loved one could become the next victim.

On the morning of June 7, 1995, in Atlanta, GA, 14-year-old Nacole Smith is taking a shortcut back home, through a path in the woods, to get a forgotten project for school. Her body is discovered brutally murdered in those woods later that morning and police race to catch her killer before he can destroy another loving family.

The gruesome murder of horse ranch owner Wendi Brant traumatises her friends and family; Police focus on her estranged husband, but there are other potential suspects that muddy the investigation and throw the case into a decades-long tailspin.

The chilling murder of Lee Rotatori and the bizarre crime scene evidence police found inside her motel room mark the beginning of a heartbreaking homicide investigation with multiple victims.

When a young girl vanishes under mysterious circumstances, police must discover if she simply ran away or was actually the victim of something far more sinister.

The murder of a young college student in her off-campus apartment leads police to believe the killer may be someone she knew and the investigation into the crime threatens to tear her grieving family apart.

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A teenage girl discovers her mother's true identity, along with a telegram that says she's been murdered; her crusade to bring a killer to justice may also bring her closer to the woman she never knew.

Police must solve the murder of a young mother who was savagely strangled to death in her bed while her two young sons slept just steps away; decades of investigating reveal an unthinkable betrayal of trust.

After police find a young mother bound and murdered in her bedroom, her family challenges police to bring a heartless killer to justice.

Police try to make sense of the confusing crime scene and find the person who killed a young mother.

Police must analyze a long emotional and rage-filled 911 call to see if it was made by a distraught husband or a killer trying to cover his tracks.

A woman finds a young mother murdered following a festive New Year's celebration; police trace her last known steps to find her killer.

The police must identify the killer of a young mother based only on her frantic words in a disconnected 911 call.

The investigation of a brutal murder forces police to challenge both confessions and lies.

A young girl vanishes on a trip to the mailbox and her abandoned pink bicycle may be the key to solving the disturbing mystery.