On the Case

After Navy electrician Michael Jacobs comes home to find his wife, Suzanne, and his three-year-old son, Colin, murdered, San Diego police race to catch a serial killer who leaves behind an unimaginable calling card.

A young woman is ambushed and murdered in Utah's Big Cottonwood Canyon.

In Lenexa, Kansas, young women disappear from their apartments as police piece together evidence showing the terrifying crimes are connected.

Police retrace a young woman's final movements with hope that it will lead them straight to her killer.

A woman's walk home from a night out at a dance club ends in a brutal murder.

A cold-case detective reopens a decades-old murder case and promises to get justice on behalf of the victim's family.

A talented chef's abduction is the impetus for what will turn out to be a chilling homicide investigation.

After coming to the aid of a stranded roommate, Stephanie Brown's car is found abandoned on the interstate and her body is later discovered floating in an irrigation ditch, the victim of sexual assault and murder.

A college student's battle for survival may be the key to solving a double homicide from years earlier.

Cell phone records may help solve the disturbing murder of a popular teenager.

The discovery of a woman's body inside an abandoned trailer leads to a 28-year search for the person responsible for her beating death.

The ring of a doorbell overheard during a teenager's final telephone call may be the key to solving her murder.

A 12-year-old girl is kidnapped during a home invasion, and police frantically search for her and her abductor. Paula Zahn explores the case.

When a young girl vanishes on the way home from school, her family and police are sent on a tormenting search for answers.

Police suspect a mysterious double homicide is not what it appears to be.

Police try to retrace a young mother's last known movements in an attempt to solve her mysterious disappearance.

When a young woman disappears before her final shift at a Maryland hospital, her family begins a decades-long search for answers.

A mother of three is found shot to death inside the trunk of her car, just steps from her home.

A 14-year-old girl is killed while walking her dog on a popular community bike trail.

Jamie Bowie disappears while driving from Phoenix to Los Angeles on Interstate 10, then her body is found near the highway a month later.

A deadly predator haunts the city of Stockton, California and becomes more and more violent.

After a 10-year-old girl mysteriously disappears, her family and the police undergo a tormenting journey to find a lead.

The police follow a trail of emails, hoping it will lead them to a 38-year-old woman's vicious killer.

A military police officer is found murdered in her own home, sending police on a twisted journey for answers.

An 18-year-old woman is murdered the night before her college career is about to begin.

A cold case team reopens the investigation into the murder of 36-year-old Linda Robinson who is savagely murdered while her seven-year-old niece is asleep in the next room.

When a teenager is found savagely murdered, police must retrace her last steps alive to identify her killer.

Police discover a treasure trove of evidence after teacher Genai Coleman is found murdered in a parking lot, but detectives still face a challenge that may prevent the case from being solved.

A look at three cases in which the quest for justice rages on after the verdict has been delivered.

A 17-year-old's shocking murder shatters the peace in a small town and destroys her family.

A hidden clue may hold the key to solving the vicious murder of a young woman.

Police have DNA evidence and a videotape of their suspect, yet they still struggle to find a vicious killer.