In 2006, Sonia Rios was dubbed by local media as the "The Black Widow of Lomita," after her second husband, Navy officer Larry Risken, was fatally shot while visiting her family in the Philippines. Sonia's first husband, U.S. Marine Earl Bourdeau, was fatally shot in the head 19 years earlier. Then in 2007, Sonia Rios was also murdered under suspiciously similar circumstances. “48 Hours" correspondent Peter Van Sant reports. This classic "48 Hours" episode last aired on 8/1/2009. Watch all-new episodes of “48 Hours” on Saturdays, and stream on demand on Paramount+.

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On the day that Helen Hargan and her mother Pamela were found dead, Helen Hargan's boyfriend Carlos spent hours convincing 911 dispatchers to send help to the Hargan house. By the time police arrived, it was too late. Police were given two versions of the morning: one where Helen was scared for her life, and one where she was likely the killer. But Carlos' story, along with the weapon placement at the crime scene, would blow a hole in the theory that the Hargan killings were a murder-suicide.

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Correspondent Tracy Smith and Producer Gayane Keshishyan Mendez discuss the case of Susann Sills, a mother of twins who was found dead at the bottom of a staircase in the home she shared with her husband, a renowned fertility doctor. The team discusses the 911 call made by Dr. Sills, the police interview with a woman investigators believed he was courting, and the defense’s unusual theory that the family dogs were involved in Susann's death.

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