Seventeen-year-old Benjamin Elliott fatally stabs his twin sister, Meghan, in the middle of the night – a crime with no known motive and an act his defense claims he committed while sleepwalking. "48 Hours" correspondent Erin Moriarty reports.

For years, Kenneth Fandrich told everyone he knew that he was being stalked by the nicest man in town. In 2023, after his wife calls 911 to report her husband missing, police discover his lifeless body in his car, parked inside a corporate parking garage. "48 Hours" contributor Natalie Morales reports.

After her husband, Kevin Davis, is found dying at the foot of the stairs, a woman accused of murder fights to clear her name. "48 Hours" correspondent Peter Van Sant reports.

Joe Shymanski was gunned down in the driveway of his Calvert County, Maryland, home in 2023. Now his niece mourns her uncle's murder and questions whether the convicted killer was the only one involved.

Robin Lawrence was home alone with her 2-year-old daughter in Springfield, Virginia, when an unknown killer murdered her. Her toddler was left to fend for herself for two days until Robin’s body was discovered. Nearly 30 years later, cold case detectives uncovered a surprising suspect. "48 Hours" correspondent Anne-Marie Green reports.

A beloved doctor, his wife, and their young daughter are murdered, leaving their Santa Barbara, California, community reeling. A suspect emerges with a fantastical story of shadowy figures and intrigue straight out of a spy thriller.

Lieutenant Dakota Black is a trained tracker and detective with the Pottawatomie County Sheriff’s Office. When Makayla Meave goes missing, Black launches an investigation that leads to the discovery of the young mother found murdered.

A stalker sends menacing messages to a young mother before she is murdered. The investigation reveals a sinister setup.

Molly Bish was just 16 years old when she went missing on June 27, 2000. She vanished after being dropped off at her lifeguarding job. What followed became the largest search in Massachusetts history. Her remains were eventually discovered, but her killer has never been identified. Decades later, Bish’s sister turns to social media, sharing her family’s story and urging the public to help generate new leads.

Joe Hunter's emotional tribute to his late sister Joanna became one of the most talked-about moments of season 48 of "Survivor". Joanna’s death was officially ruled a suicide, but Joe says she was murdered and has made it his mission to uncover the truth.

When a high school softball coach and one of her former players are arrested for the murder of Indiana man Shea Briar, the coach places all the blame on the player. Prosecutors, however, say the coach orchestrated the killing.

When a gravely ill young woman is rushed to the hospital, doctors make a shocking discovery: she has an “astronomical” amount of lead in her body. What begins as a medical mystery quickly becomes a criminal investigation. Hannah Pettey, a young mother from Alabama, suffered debilitating pain and lost more than 45 pounds in the months prior as her health rapidly declined. Investigators focus on the two people she trusted the most as the police work to uncover who was poisoning Hannah, and why.

A Pennsylvania man claims a freak accident while handling his gun caused the death of his wife, Melissa Rocuba. Bruno Rocuba was not arrested or charged with any crime. Years later, investigators uncover disturbing new evidence that challenges Bruno Rocuba’s story, including surveillance audio capturing his wife’s final moments. The recording raises haunting questions about what really happened in that bedroom and whether Melissa Rocuba’s death was truly an accident.

When Debe Atrops was murdered, her daughter, Rhianna Stephens, was just 8 months old. More than 30 years later, a cold case team from Washington County took a fresh look at the case by talking to witnesses and running new tests on old evidence. The team thought they had enough to prosecute Debe’s estranged husband at the time of her murder, Bob Atrops, who is also Stephens’s father. Stephens is convinced they have the wrong man—after losing her mother, she fears losing her father too.

When Katlyn Lyon Montgomery died in October 2022, her mother turned to TikTok to share her grief and demand justice. As the case evolved from a possible accident to a homicide, she built an online community to help hold Katlyn’s killer accountable.

On December 23, 2023, police were called to a Texas home where two teenagers had been shot. Eighteen-year-old Ethan Riley died from his injuries, while 19-year-old Ben Bliek survived. Their friend, 17-year-old Connor Hilton, was arrested and later confessed to the shooting. He claims the shooting was triggered by a reaction to a popular prescription acne medication, saying it caused him to experience homicidal thoughts. Prosecutors, however, reject that explanation and say the evidence points elsewhere.

In 1969, 17-year-old Mary Kay Hesse was stabbed to death in Wahoo, Nebraska. For more than 50 years, the murder remained unsolved. But advances in investigative techniques and renewed focus by law enforcement helped piece together long-overlooked evidence, ultimately leading to an arrest.

When a college student in Milwaukee vanishes after a first date, investigators race to retrace her final movements. Using data from an app on her phone, law enforcement begins to piece together where she went—and whom she was with. As the investigation focuses on a man named Maxwell Anderson, chilling security camera footage and evidence discovered on a secluded beach raise urgent questions about what happened to Sade Robinson.

When a woman’s remains found in a swamp outside Savannah are identified, friends are stunned. They had been told Mindi Kassotis died in a hospital. But five months later, authorities say she was murdered. Investigators work to unravel how she appeared to die twice, and what really happened in the months between.

The murder of third grade teacher Jocelyn Peters baffled investigators in St. Louis, Missouri, from the start. The crime scene contained unusual clues, such as potato fragments splattered near the victim, and the behavior of a person of interest before a police interview caught detectives’ attention. Why did this man eat pages from a notebook when facing questions about Jocelyn’s murder? What did investigators believe the notebook might reveal?

Late at night in Barron County, Wisconsin, a couple watches as a rolled-up carpet is carted out of a nearby home. Soon after they learn the combative neighbor who lived there, Gary Herbst, is missing.

A high-profile kidnapping case that drew national attention, and was the subject of a 2024 Netflix docuseries, takes a new turn. Denise Huskins Quinn and Aaron Quinn worked with law enforcement to help uncover additional crimes committed by their attacker, Matthew Muller. In doing so, the Quinns helped bring justice to other victims and found a way to reclaim their own story.

What begins as a burglary investigation quickly turns into something far more sinister. When a thief is caught in the act, he sends police down a trail of evidence that reveals the murder of Harold Allen, involving thousands of text messages, unusual poisons and a root beer float. How did a sweet treat become central to a deadly crime?

Tiffani McInnis was a teenager when her mother, Kimberly Langwell, failed to return home from work, leaving her family searching for answers. More than 20 years later, detectives in Beaumont, Texas, received critical information that would lead to a secret grave and a horrific discovery that finally revealed Kimberly Langwell’s fate.

The last known sighting of a missing teenager leads investigators to a remote Iowa farm, where photos discovered on an old cell phone reveal critical clues. As law enforcement works to make sense of the evidence, those images help them put the pieces together and determine what happened to 14-year-old Jade Colvin.

In 1984, 16-year-old Theresa Fusco vanished after leaving her job at a local roller rink. Nearly 41 years later, a breakthrough involving DNA from a smoothie straw has finally brought new answers.

Gloria Choi, a young single mother from Washington, had a chance meeting that led to what appeared to be a dream romance. Her new boyfriend, Billy Rickman, showered her with attention, convincing those around her that he was deeply devoted. But investigators would later uncover a far more troubling reality. As police pieced together what was real and what was deception, the investigation revealed how the relationship spiraled into violence and ended in murder.

When Beverly Hills police respond to a 911 call at a mansion, they discover a widow, Violet Yacobi, dead below a staircase. How did she end up on the marble floor of her entryway, and was her death the result of a tragic accident or something more sinister?

After a conviction in the arson death of billionaire in Monaco, Ted Maher changes his name and puts out a hit on his estranged wife in New Mexico. He denies it all.

Kouri Richins, the Utah mother who made headlines for publishing a children’s book about grief after her husband’s death, was sentenced just last week to life in prison without parole for his murder. Prosecutors argued she poisoned her husband, Eric Richins, in a case that drew national attention. Now, jurors who heard the evidence are speaking out about what led them to convict her, including what they believe motivated the crime and why they reached their verdict.