48 Hours

Killer App tells the story of two families whose daughters got involved in online relationships that became a matter of life or death. It's a story that will resonate with millennials, teenagers and parents, who, thanks to so-called "parent proof" platforms, often don't know what their kids are doing on their phones, laptops, tablets or computers until something goes terribly wrong.

When an elderly millionaire is found dead in a freezer, her decades-younger companion is brought up on murder charges; the movie inspired by the story, ``Bernie.''

A young woman is murdered, police thought her killer was on the run ... or was he? Correspondent Tracy Smith investigates.

The case of Shelley Mook, a young mother and Tennessee school teacher who mysteriously vanished after visiting her ex-husband, is examined.

48 HOURS goes inside the missing persons investigation and the stunning revelations her alleged captor, Todd Kohlhepp, 45 year old real estate broker, made to police in "Buried Truth."

Authorities in Colorado race to catch a serial rapist before he attacks again.

When a 17-year-old girl breaks up with her abusive boyfriend, he snaps and breaks into her bedroom to attack her.

48 Hours takes viewers inside international basketball star-turned-tech entrepreneur, Sebastien Bellin's, remarkable eight-month journey of recovery after being nearly killed in the March terrorist attacks in Brussels, in a special Live to Tell: The Long Road Home.

Jacob Nolan, a young man who claims his psychiatrist manipulated him into trying to kill her ex-lover, speaks out.

A day care worker says she loved kids, yet she's in prison for killing one. If she didn't do it, why did she confess? "48 Hours"' Erin Moriarty has the latest in the Melissa Calusinski case.

A stepfather sits in prison for killing his wife. Her daughters vow to keep him there. Does he deserve parole? Correspondent Tracy Smith investigates.

Erin Moriarty and 48 HOURS take viewers deep inside the investigation into a hard-to-close murder case, and those investigators ask for help from the audience in "Solve This Case: Who Killed Kay Wenal?"

It's a case that raises questions about the investigation process, about the technology used decades ago, and about how two men can be convicted of a crime when the initial DNA evidence excluded them. Moreover, it's a case that looks at how a new way to examine DNA evidence has the potential to change the outcome in thousands of cases nationwide.

The investigation into the brutal murder of a beloved Florida doctor reveals his dark, secret past.

The investigation into the murder of a beloved Florida doctor reveals his dark, secret past.

A Florida doctor is brutally murdered. Her husband has an airtight alibi, but police travel 1,100 miles for a suspect that looks exactly like him. "48 Hours" correspondent Erin Moriarty investigates.

Erin Moriarty and 48 HOURS investigate multiple terrifying cases of stalking and the efforts driven by Pauley Perrette, star of CBS' NCIS, to change laws that she says are outdated or ineffective.

Singer Christina Grimmie was killed by a stalker and Ivanka Trump has been stalked, too; now, an "NCIS" star is trying to change stalking laws. "48 Hours" correspondent Erin Moriarty investigates.

A woman spends almost two decades searching for the man who kidnapped her from her bedroom and left her for dead when she was 8 years old.

Maureen Maher and 48 HOURS investigate the death of Cory and interview Curtis about the murder case against him.

A popular football coach convicted of murder gets a chance at freedom -- can evidence withheld from his trial prove him innocent? "48 Hours" correspondent Richard Schlesinger investigates.

A brutal murder - police have DNA evidence, but can't match a killer - so how did a public DNA database lead police to suspect a filmmaker of murder? Anne-Marie Green investigates.

Comedian Patton Oswalt opens up in his first television interview about his late wife's quest to find the elusive criminal who terrorized Californians by committing 50 rapes and a dozen murders.

The investigation into a cult that originated in Australia and ended up in New York reveals allegations of stolen children, drug use, abuse and a leader who claimed to be the second coming of Christ.

The investigation into a cult that originated in Australia and ended up in New York reveals allegations of stolen children, drug use, abuse and a leader who claimed to be the second coming of Christ.

The investigation into two double murders committed five years apart leads police to a famous hospital and an unlikely suspect.

In 1976, a gunman dressed in black murders two people and wounds two more in the Texas mansion belonging to one of the victims.

Did fashion icon Gianni Versace know his killer? A "48 Hours" investigation into the killing spree that ended his life in Miami 20 years ago. Richard Schlesinger reports.

In her first television interview, Lynn Roy opens up about the death of her son, Conrad Roy III, and the groundbreaking case against Michelle Carter, who prosecutors say caused Roy to kill himself in text messages.

The rescue of a woman found chained in a storage container leads investigators to discover the other crimes of the serial killer who held her captive.

Peter Van Sant and 48 HOURS investigate a Texas-sized case of love, infidelity, rage and possibly murder.

Jacob Nolan, a young man who claims his psychiatrist manipulated him into trying to kill her ex-lover, speaks out.

The latest update in Susan Spencer and 48 HOURS' investigation into the 2011 death of Uta von Schwedler, who was found in her bathtub by her then-boyfriend. It took six weeks for the autopsy report to be released, which listed the cause of death as drowning. The manner of her death was listed as "undetermined," leaving open the possibility of suicide. Evidence at the scene even suggested von Schwedler might have killed herself.But her son, Pelle Wall, was convinced his father Johnny Wall killed her and vowed to do whatever he could to get his father convicted. Johnny Wall maintained he had nothing to do with his ex-wife's death. He was arrested and charged in 2013 with killing his wife. He went on trial in February 2015.Saturday's broadcast of "Father and Son" has the latest twist in a case that 48 HOURS has been covering for four years.

After a two-year investigation into the disappearance and murder of the University of Virginia student Hannah Graham, police have been able to close Graham's case and two others, including the murder of another young woman. Susan Spencer and 48 HOURS report on Graham's murder and the tireless police work that was able to link the man charged with killing her to other cases in an updated encore of "Hannah Graham: Deadly Connections".