Sheryl “Mac” McCollum is an Emmy Award winning CSI from CBS46's CSI Atlanta, Director of the Cold Case Investigative Research Institute (CCIRI), a writer for CrimeOnLine, Forensic and Crime Scene Expert for Crime Stories with Nancy Grace, and a CSI for a metro Atlanta Police Department. Sheryl holds a master’s degree in Criminal Justice with an emphasis on Policing.  She is the co-author of the textbook., Cold Case: Pathways to Justice. 

Kate discusses Mac’s career arc, from teenage Rape Crisis Center volunteer to founder of the Cold Case Investigative Research Institute. 

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