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b'Kendra Hatcher enters the parking garage of her Dallas apartment. Moments later, someone approaches her from behind, shooting her in the head. Police say it was a murder-for-hire. Detectives soon zero in on\\xa0Brenda Delgado, but why would this dental hygienist kill the successful pediatric dentist?\\n\\nJoining Nancy Grace today:James Shelnutt - 27 years Atlanta Metro Area Major Case Detective, Swat officer Lawyer www.ShelnuttLawFirm.comDr.\\xa0Jenn\\xa0Mann\\xa0- Marriage and Family Therapist, Host \'Couples Therapy\' and \'Family Therapy\' on VH1, "The Dr.\\xa0Jenn\\xa0Show\\u201d on Sirius XM, Author: "The Relationship Fix: Dr.\\xa0Jenn\\u2019s 6-Step Guide to Improving Communication, Connection and Intimacy", doctorjenn.comDr. Tim Gallagher - Medical Examiner State of Florida www.pathcaremed.comSheryl\\xa0McCollum\\xa0- Forensic Expert & Cold Case Investigative Research Institute Founder, ColdCaseCrimes.orgAlexis\\xa0Tereszcuk - CrimeOnline.com Investigative Reporter, Writer/Fact Checker, Lead Stories dot Com, Twitter: @swimmie2009'