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Sheryl “Mac” McCollum has worked with criminals like famed Mafia hit man Frank Cullotta, Johnny Lee Cleary the ex Imperial Wizard of the KKK, the Flint River Killer, Alcatraz Inmate #1355 Robert Schibline and Jimmy Hoffa’s driver, The Weasel, to gain intel on how to solve certain cold cases. For almost forty years, Sheryl has used her training and experience in criminal justice to solve some of the country’s most difficult cases. Sheryl “Mac” McCollum's law-enforcement career began in 1982 at the Rape Crisis Center at Grady Memorial Hospitalin Atlanta, Georgia. From there, she was director of the Metro Atlanta Cold Case Crime Analysis Squad.
McCollum in 2004 founded Cold Case Investigative Research Institute (CCIRI), which unites researchers, practitioners, students and the criminal justice community to work collectively to advance research, training and techniques in solving cold cases. CCIRI has since worked with over 27 colleges and universities, more than 8,000 students and 600 experts, have volunteered their time and talents to solve cold cases. Mac is an three time nominated Emmy Award winning CSI from CBS46’s CSI Atlanta, National Law Enforcement Officer Hall of Fame Inductee, 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 working CSI for a metro Atlanta Police Department. Sheryl holds a master’s degree in Criminal Justice with an emphasis on Policing. She is a contributing writer for CRIME online, a crime-fighting website founded by Nancy Grace, television personality and former.