On the Case with Paula Zahn

Police use a revolutionary new technique to find the person responsible for a savage murder at the Paradise Ranch.

Police investigate the terrifying mystery behind the murder of two teenage girls. Were they victims of a targeted attack?

When a young woman is murdered, police try to retrace her last known steps. They discover two shockingly different possibilities of how she died.

In East Windsor, New Jersey, police attempt to solve the kidnapping of a 19-year-old who was taken out of her bed in the middle of the night.

The gruesome murder of a beloved restaurant owner in Ben Lomond, California sparks a mystery. An unlikely clue leads a cold case team to her killer.

When two young women are murdered on the same scenic bike trail just months apart, police are baffled by the similarities of their deaths.

When the beloved preacher's wife is found dead, police must sift through a maze of phone records and a grainy video to pick up the murderer's trail.

Will a heartbroken mother's quest for justice lead police to solve the murder of her daughter and a close friend in Cape Coral, Florida?

Will the mysterious details of one teenager's murder lead police to solve two brutal murders committed by the same deadly predator?

Will a hidden message discovered on the body of a murder victim in Three Rivers, Michigan, be the key to finding the young mother's killer?

Can Worcester, Massachusetts, police piece together the puzzling clues found at the tragic murder scene of a beloved schoolteacher?

When the body of a young woman is discovered in the woods, investigators are faced with a difficult decision if they're to solve this hauntingly familiar murder.

An active-duty soldier dies in a brutal attack during a night out with her unit. Police determine if a secret fear she told her mother is the motive for her murder.

Police investigate the gruesome murder of a mother and child. They quickly realise all the evidence indicates the killer was someone the victims knew and trusted.

A young woman is murdered in a bar parking lot. As police retrace her last known steps, several suspects with possible motives come on their radar.

Police wonder if a young woman's personalised 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 and a victim who has been savagely murdered. Investigators sort through his complicated life to find his killer.

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.

A romantic date at a high school Valentine's dance turns into a night of terror when a beautiful teenager is abducted from her boyfriend's arms at gunpoint.

An unidentified woman is found 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 beautiful young woman leads police to zero in on 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 coed disappears, and her family launches a desperate investigation to find her. What they discover will change 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 attempt 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. Will a needle in the mud reveal the truth behind her disappearance?

Investigators deal with puzzling clues and odd witness accounts when trying to solve a 1987 murder.Will lost evidence be the key to identifying the killer?

A young girl is brutally murdered whilst walking to school. Police race to find and catch the killer before he can destroy another loving family.

A savage homicide and its disturbing evidence devastate a teenager's loving family. The tight-knit community is left to wonder if their loved one could be next.

Police arrive on the scene of the chilling murder of Lee Rotatori. The evidence they find inside her motel room marks the beginning of a shocking homicide investigation.

When a college student is found murdered in her apartment, police suspect the killer is someone she knew. The investigation threatens to tear her family apart.

A young woman is murdered in an ambush-style shooting. Police are forced to question whether this brutal attack is a terrifying case of mistaken identity.

A young girl vanishes under mysterious circumstances. Police must discover if she simply ran away or was the victim of something far more sinister.

A neighbourhood garage sale ends in a hail of gunfire. Can police catch a cold-blooded killer who was caught in the act by surveillance cameras?

A girl discovers her mother's true identity after she's murdered. Will the investigation 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.

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

A puzzling crime scene, disturbing evidence and a young mother murdered. Can police bring her killer to justice?

Police must analyse a long emotional and rage-filled 911 call. Was it 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. Can police trace her last known steps and find her killer?

When a woman is found murdered in her home, police use a frantic 911 call from the night of the crime to identify her killer.

When a young woman is brutally murdered in her home, police must sort through confessions and lies in their hunt for a cold and calculating killer.

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

Painful questions torment an Ohio husband after his wife's brutal murder - in particular the community's doubts about whether he had been her killer.

When Father Rivera is called in the middle of the night to perform the last rites for a dying man, the night ends with the priest's shocking murder.

Two police departments in California join forces to find the vicious killer of two separate Jane Doe victims, murdered in a shockingly similar way.

In California, the terrifying abduction of a young girl sends a relentless detective on a quest to bring justice to her heartbroken family.

Will a trail of blood from the balcony of a young woman's apartment to the complex's parking lot lead police to her cold and calculating killer?

A young mother is brutally murdered inside her own home. Will her family's relentless quest for justice help put her killer behind bars?

In 1998, an unidentified woman is found bound, frozen and shot to death in the mountains of Utah. Police race to find her killer.

In 1984, a kidnapper abducts a 12-year-old during the hour she is left home alone in Colorado. Will police be able to solve the puzzling case?

Will an odd text sent from a mother to her daughter be the critical clue that transforms a missing person's case into a homicide investigation?

Will a terrifying witness account lead a small-town police department in the wrong direction as they try to solve the brutal murder of their friend?

Will the chilling evidence found inside a quaint Utah bookstore bring the violent killer of its beloved owner to justice?

Did a woman's crusade to teach children to read lead to her murder? The police's only hope is to follow the clues left behind by the victim.

Police must solve the murder of a young woman killed while celebrating her graduation from U.S. Naval training.

Police discover that the successful wife of a popular DJ has been murdered. Will video cameras in the neighbourhood help bring her killer to justice?

A waitress is attacked as she returns home from work, late at night. Will a chilling clue found at the crime scene ultimately lead to justice?

Police uncover a trail of evidence that indicates that a missing young woman has been the victim of foul play. Can they find her before it's too late?

Police struggle to dissect the love triangle that led to the murder of a woman. Was her jilted husband responsible, or her jealous new boyfriend?

Police attempt to connect crime scene evidence from two eerily similar murders to put one vicious killer behind bars.

The horrifying truth behind the murder of a beloved reality star. What really happened to the "Welcome to Sweetie Pies" cast member?