Mom, baby and grandmother gunned in cold blood by perp who hides bloody clothes and weapons in woods.

Teen Matthew Bernard kills his mother, sister, nephew, and the family dog. The question remains as to why. Police are looking to data from a recovered cell phone for an explanation. Joining Nancy Grace today: Ken Belkin, NY criminal defense attorney; John Cardillo, Former NYPD; Dr. Caryn Stark, Psychologist; Dr. Michelle Dupree, Medical Examiner; reporter Levi Page Investigative Reporter Crime Online.com.

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