Mother testifies Lindsay Clancy's mental collapse preceded killings of her three children

In Plymouth, Massachusetts, Paula Musgrove testified that her daughter Lindsay Clancy deteriorated over three months before fatally strangling her children in January 2023. Clancy told her mother, "this isn't me," reported thoughts of harming the children, and said by January she couldn't remember anything. Clancy pleads not guilty by reason of insanity.