48 Hours

The investigation of Michael Gargiulo, the serial killer known as "The Hollywood Ripper."

The investigation of Michael Gargiulo, the serial killer known as "The Hollywood Ripper."

A two-part report examines the investigation of Michael Gargiulo, the serial killer known as the Hollywood Ripper.

Scott and Kim Richardson, whose daughter Brooke Skylar Richardson was tried for the death of her newborn baby, detail the impact of the case on their family and their daughter.

The ex-girlfriend of a man in jail awaiting trial for the murder of his fiancée says she knows what happened in the case.

Survivors share their experiences of being abducted by masked gunmen and buried alive in a truck trailer.

When an Ohio mother is brutally murdered, a detective pursues the wrong suspects while the real killer walked free; a dedicated sheriff uncovers a real suspect.

The investigation into the 1996 murder of a New York businessman in the headquarters of his successful office supply store and coffee shop.

An investigation into the disappearance of Kelly Dwyer raises questions about the potential dangers of online dating.

Newly developed DNA technology leads investigators to multiple suspects in a 1996 murder case.

The case of a Pennsylvania man who is shot dead following a bitter divorce raises questions about law enforcement's responsibility when someone repeatedly reports being threatened.

The startling evidence that helped convict Colorado man Patrick Frazee for the murder of his fiancée.

Two mothers help police with the cold case of a college student who was murdered on Thanksgiving weekend in 1989.

When a California police officer is shot dead in his home, his ex-wife says she pulled the trigger.

Chacey Poynter, a Texas woman convicted in the 2016 murder of her husband, tells her story about what happened the night he died.

A survivor deals with trauma following the murder of her family by her stepbrother, all so he could go to the prom.

A Michigan woman accused of setting fire to her family home and murdering her husband in 2007 speaks out.

A young woman claims she was attacked by an ex-boyfriend who carved the word boy into her arm, but the crime scene tells a different story.

Prosecutors claim a Florida man hired his look-alike best friend to kill his wife, who he believed was planning to take their kids and leave him.

An investigation into the death of a Hollywood therapist; former fiancé TV host Drew Carey calls for updated laws.

After a teen learns she's the target of a hit on the dark web, the "48 Hours" team starts a global manhunt to find the shadowy figure behind the murder-for-hire websites.

Body camera footage helps tell the story of a case in which a woman says her husband was killed by a masked intruder, but evidence points to her as the culprit.

When a man murders a young woman before killing himself, doctors are able to harvest his heart to save another woman's life.

New witnesses and DNA evidence raise doubts about a convicted murderer's guilt.

A fresh look at the very cold case involving the murder of Lizzie Borden's father and stepmother in 1892.

When police are called to an upscale Gainesville, Fla., home to find a couple stabbed and bleeding, the husband says an intruder attacked them; when the wife regains consciousness, she has a very different story.

Three women who were attacked by the notorious serial killer Ted Bundy reveal their terrifying stories of that night, their healing and hope.

A Florida man remains in prison two years after having his 1990 murder conviction -- which his lawyers call a "racial hoax" -- overturned by a federal judge.

When a young nursing student at Binghamton University in New York goes missing, her roommates use an app to track her down, finding evidence that launches an international manhunt for her killer.

Detectives believe a 13-year-old girl who vanished from her California home in 1981 was murdered; more than 20 years after the disappearance, a traffic stop in Arizona turns up a woman claiming to be the missing girl.

The FBI believes skulls drawn in blood are the number of victims murdered by a prolific serial killer.

An Idaho mother speaks out about the disappearance of her children, whom she never reported missing.