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 — founder of Cinco Peso Security & Investigations in Texas, psychologist Dr. William July — whose website is DrWilliamJuly.com, Atlanta prosecutor Kenya Johnson, and Crime Stories reporter Robyn Walensky — author of “Beautiful Life?: The CSI Behind the Casey Anthony Trial & My Observations.”

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FBI joins investigation into triple deaths of Mom and two young daughters, found shot to death inside lavish mansion: Report

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[Feature Photo: Nichol Olsen and daughters/Instagram]