FBI joins probe of mom, young daughters, shot to death inside lavish mansion

The deaths of a Texas mother and her two young daughters, which a medical examiner first believed was a murder-suicide case, is now being investigated by the FBI. Bexar County Sheriff Javier Salazar rejected that conclusion and then requested the FBI's help with “technical and investigative” work in connection with the deaths of 37-year-old Nichol Olsen and her two daughters, Alexa Montez, 16, and London Bribiescas, 10. Nancy Grace looks at the case with private investigator Jon “JT” Tipton, psychologist  Dr. William July, prosecutor Kenya Johnson, and Crime Stories reporter Robyn Walensky.

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