A mother goes viral on TikTok demanding justice for her murdered daughter. Natalie Morales reports.

In May of 2004, Bill McGuire’s dismembered body was found in three suitcases in Chesapeake Bay. His wife, Melanie, was charged with murder but maintains her innocence. She agreed to share a behind-the-scenes video diary for "48 Hours." “48 Hours" Correspondent Maureen Maher reports.

This classic "48 Hours" episode last aired on 2/23/2008. Watch all-new episodes of “48 Hours” on Saturdays, and stream on demand on Paramount+.

When Lita Sullivan opened her door to accept a gift of a dozen roses, she had no idea it would be the last thing she would ever do. The man with the flowers shot her dead. Her husband, millionaire Jim Sullivan, became the primary suspect. Her murder would remain unsolved for years until two unlikely witnesses finally stepped forward. “48 Hours" Correspondent Susan Spencer reports.

This classic "48 Hours" episode last aired on 7/21/2007. Watch all-new episodes of “48 Hours” on Saturdays, and stream on demand on Paramount+.

48 Hours correspondents Natalie Morales and Anne-Marie Green discuss the 2013 killing of Melissa Rocuba that went unsolved for nearly nine years. They discuss new information retrieved from old evidence that led to the arrest of Melissa’s husband, Bruno, and the conflicted feelings their daughters have about their father today.

A woman dies after an “accidental” shooting in her bedroom. Eight years later surveillance audio upends the case. Anne-Marie Green reports.

Brendan Banfield is on trial for the murder of his wife Christine and another man, Joseph Ryan -- but it’s the family au pair’s role that has drawn attention in court this week as she testified against him. Juliana Peres Magalhães, who was romantically involved with Banfield, detailed an elaborate catfishing scheme meant to lure Ryan to the Banfield home and make it look like he stabbed Christine. Magalhães pleaded guilty to involuntary manslaughter in the murder of Joseph Ryan and is now cooperating with the government. In a special episode, 48 Hours correspondent Anne-Marie Green breaks down the latest developments in the trial with 48 Hours producer Michelle Sigona.

On January 18, 1997, Beverly Watson disappeared and her husband, Jim, became a prime suspect in the case. There was virtually no evidence: no witness, no body, and no proof that Beverley was even dead. But police noticed that Jim was wearing makeup to conceal what appeared to be scratches on his face. “48 Hours" Correspondent Harold Dow reports.

This classic "48 Hours" episode last aired on 5/28/2005. Watch all-new episodes of “48 Hours” on Saturdays, and stream on demand on Paramount+.

In 1979, police officer John Busby was shot in the face as he sat in his car. He barely survived and as he lay in the hospital he wrote his family a note saying he knew who did it. John and his family went into hiding but for years afterward lived in fear that the killer would strike again.

This classic "48 Hours" episode last aired on 12/28/2013. Watch all-new episodes of “48 Hours” on Saturdays, and stream on demand on Paramount+.

48 Hours correspondents Natalie Morales and Anne-Marie Green discuss the survivor story of Hannah Pettey, a young mother from Alabama who was poisoned with lead. They discuss why police first suspected both Hannah’s mother and her husband, Brian, why Hannah believes Brian had attempted to previously kill her in a car crash, and her incredible recovery.

When a young woman nearly dies from poisoning, investigators focus on the two people she trusted the most. Anne-Marie Green reports.