A young mother admits to killing her partner, telling police she had endured years of abuse and feared for her life. So why didn't everyone believe her?

How did images of a 17-year-old girl’s murder go viral? CBS News' Jericka Duncan reports.

Gabby Petito documented her road trip cross-country with her fiance before she was reported missing on September 11th. Now her fiancé, Brian Laundrie, is a person of interest in the case. CBS News national correspondent Jericka Duncan investigates.

“48 Hours” explores Gabby Petito’s final days and the missed warning signs that might have saved her. "48 Hours" contributor Jericka Duncan reports.

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