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Mary L. Daugherty

Retired Special Agent

Bureau of Alcohol, Tobacco, Firearms and Explosives

Mary Daugherty is a retired Senior Special Agent with the Bureau of Alcohol, Tobacco, Firearms and Explosives (BATF). During Mary’s 27 years of Federal service, she was assigned to the Violent Gang Task Force and applied investigative and interviewing skills as case agent and in undercover capacities investigating Asian Organized Crime, Jamaican Posses, Bandidos Motorcycle Gang, Texas Syndicate Prison Gang and Mexican Mafia. An 18-month investigation involving the arrest of 120 members of the Texas Syndicate resulted in Special Agent Daugherty and two other agents being recognized as "Officers of the Year" by the 100 Club of Houston. During her later years with ATF, Mary also served as ATF Intelligence Officer assigned to the FBI Joint Terrorist Task Force (JTTF) and investigated members of Domestic Terroristic Organizations. She was a Crisis Negotiator for ATF and a volunteer with the Crisis Hotline Intervention Program in Houston, Tx.

As an instructor with Analytic Interviewing, Mary worked with Dr. Paul Ekman, Dr. Mark Frank, Dr. Maureen O’Sullivan and Dr. Ed Geiselman learning and applying the latest and most advanced research available in interviewing techniques. Researchers determined that Mary is capable of detecting deception better than 99.99923% of the 13,000 law enforcement officers, judges and psychotherapist tested, placing Mary is part of an elite group of individuals known as the Wizards. As a certified instructor for the Department of the Treasury and Department of Justice, Mary instructed interviewing and undercover courses for 20 years at Glynco, GA. and trained thousands of law enforcement officers at numerous conferences and training programs.


  • "Your analytical interview techniques and instruction are an important part of our training and truly demonstrate the value of your curriculum. Some of the students remarked that it was the best interview training they have attended." - A.J. Carrol, Asst. Chief Golden Gate Division, California Highway Patrol
  • "Enhanced the field agent's ability to recognize areas we should pursue when assessing the validity of individuals and information." - NCIX
  • "I want to take opportunity to thank you and your staff for the training you recently provided to this Agency's Security Protective Officers and the attendees from law enforcement agencies in the Washington Metropolitan Area. The Institute's interview/ interrogation methodologies, combines with academic research presented by Dr. Mark Frank, and incorporated practical exercises were universally well received by the class participants."- James Kirkman, Chief Protective Programs Group, CIA

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Courses Available

  • Analytic Interviewing
  • Rapport & Control
  • The Cognitive Interview
  • Forensic Questioning
  • PEACE Model
  • Language and Listening
  • Personality Disorders & Interviewing

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