The bound bodies of four women are found along a desolate stretch of beach. Disturbing new details about the architect police say is a serial killer. "48 Hours" correspondent Erin Moriarty reports.

The family of murdered student Kaylee Goncalves says they may have uncovered a connection between the suspect, their daughter, and Madison "Maddie" Mogen. "48 Hours" correspondent Peter Van Sant reports.

A crime scene investigator is gunned down in broad daylight. The harrowing scene is captured on surveillance video. Who pulled the trigger? "48 Hours" correspondent Erin Moriarty reports.

A woman discovers explicit photos of herself on her stepfather’s computer. Soon after, he’s found dead. Jade is a likely suspect, but did she do it? "48 Hours" correspondent Tracy Smith reports.

How police connected the murders of two young women to a man known as a zombie-fighting comic book hero. "48 Hours" correspondent Peter Van Sant reports.

How a killer dressed like a clown murdered a mom and almost got away with it. "48 Hours" correspondent Peter Van Sant reports.

A high school student on her way to drill team practice is found murdered on campus. What it took to close the case after 30 years. "48 Hours" contributor Natalie Morales reports.

New evidence discovered after Murdaugh murders reignites a cold case. "48 Hours" obtains findings of independent forensic experts. CBS News national correspondent Nikki Battiste reports.

A frantic 911 call captures the sound of a gunshot as a couple reports a break-in. How did the intruder disappear? "48 Hours" contributor Jamie Yuccas reports.

How a yellow hammer nailed a suspect in the case of a missing businesswoman. "48 Hours" correspondent Peter Van Sant reports.

A young wife and mother dies unexpectedly with a strange mix of drugs in her system. Investigators turn to her journals for answers. "48 Hours" correspondent Erin Moriarty reports.

When a mother of two is found dead in her home, her father obtains death scene photos that help solve the case. "48 Hours" contributor David Begnaud reports.

A gunfight in the dead of night. The targets fire back. Their son in the crosshairs of suspicion. "48 Hours" contributor Jim Axelrod reports.

After their daughter’s violent death, a mother and stepfather track down the suspect’s car for answers. "48 Hours" correspondent Peter Van Sant reports.

A promising young athlete is murdered. Her suspected killer disappears and an international manhunt by U.S. Marshals begins. “48 Hours” contributor Jonathan Vigliotti reports.

A family man abruptly vanishes. Police tie his disappearance to a monstrous plot for revenge. "48 Hours" contributor Natalie Morales reports.

Amie Harwick's roommate speaks out about trying to save her and helping to convict her killer. "48 Hours" correspondent Erin Moriarty reports.

A Las Vegas journalist is stabbed to death while investigating claims a boss was toxic. Did his reporting make him a target? "48 Hours" correspondent Peter Van Sant reports.

When her husband is found dead of an apparent overdose, Kouri Richins writes a children's book about grief. Soon after she’s charged with his murder. "48 Hours" contributor Natalie Morales reports.

The Menendez brothers were given life sentences for gunning down their own parents. Now they’re hoping new evidence could reopen the case. "48 Hours" contributor Natalie Morales reports.

When a renowned hairstylist is killed poolside, investigators look at his wife. Was her alleged affair with her racquetball coach a motive for murder? "48 Hours" contributor Michelle Miller reports.

A mother of six becomes deathly ill with unusual symptoms. Investigators suspect she was murdered with a poison protein shake."48 Hours" contributor Natalie Morales reports.

A woman convicted of murdering her husband discovers serious problems with some key evidence used against her at trial. "48 Hours" correspondent Erin Moriarty reports.

Jennifer Dulos disappeared on May 24, 2019. Dulos's estranged husband, Fotis Dulos, was charged with her murder, but after he died by suicide the focus turns to his girlfriend, Michelle Troconis.

A young Minnesota mother goes missing. Her sister turns to TikTok for help. "48 Hours" correspondent Peter Van Sant reports.

A caregiver is accused of poisoning her friend with eye drops. She says investigators got it wrong. "48 Hours" contributor Jericka Duncan reports.

A Kansas woman is found dying from a gunshot wound. Evidence at the scene doesn't add up, so a prosecutor gets creative. Erin Moriarty reports.

Police in Massachusetts investigate one of their own when a detective becomes a suspect in the shooting death of his wife. "48 Hours" contributor Nikki Battiste reports.

When her mother disappears, 7-year-old Nicki Bates begins a lifelong search to find her and bring her killer to justice. "48 Hours" correspondent Peter Van Sant reports.