CVSA® Featured on History Channel’s Hit TV Show “Hunting Hitler”

The History Channel’s international hit television series “Hunting Hitler” uses 21st Century technology to track the activities of high-level Nazis during and after World War II.

The Computer Voice Stress Analyzer (CVSA®) was selected to analyze archival video footage of an individual claiming to have witnessed one such event, which has never been fully investigated until now…

Expert CVSA Examiner Alan Hall conducted a forensic analysis of the last known interview of former Deputy Chief of the Argentine Federal Police, Commissioner General Jorge Silvio Colotto.  Commissioner Colotto served under the former President of Argentina, Juan Perón, and claimed to have witnessed Hitler’s Deputy, Martin Bormann, leaving a secret meeting with President Perón in Buenos Aries, Argentina during 1945.

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Fifth Annual (2016) Professor James L. Chapman Award for Excellence

The fifth annual (2016) Professor James L. Chapman Award for Excellence was presented to Investigator Mike DeFrancisco of the Columbus Division of Fire, Fire and Explosive Investigations Unit (OH) during the 2017 AEC. Mike Defrancisco has contributed immensely to the CVSA community by applying the CVSA to arson and explosive cases, which have less than a 5% solve rate nationwide.  Through strategic use of the CVSA in his investigations, Mike has helped his unit exceed a 20% clearance rate for such investigations, which is four time greater than the national average.  In addition Mike has served as a board member and the Director for Region 1 of the National Association of Computer Voice Stress Analysts (NACVSA) since its inception, and has contributed immensely to the professionalization of the NACVSA.  Our congratulations are offered to Investigator Mike DeFrancisco, his unit, and agency for a job well done!

CVSA Featured on National Television Show

The CVSA was recently featured on the daily television show “Crime Watch Daily”.  The episode featuring the CVSA aired on 12 May 2016, and told the story of the gruesome murder of Tim Johnson of Eaton, Ohio, who was murdered by his stepsister and her boyfriend.  The case was investigated by the Preble County Sherriff’s Office. Investigators credit the CVSA for providing crucial information that helped solve the case, stating that if it had not been for the CVSA the suspects would have “gotten away with murder.”  To view the Crime Watch Daily episode featuring the CVSA click here.


  • Details of the 2017 Advanced Examiner Professional Development & Continuing Education Conference have been announced.
  • The fourth annual Professor James L. Chapman Award for Excellence was presented to Detective Jerry Crotty of the Manatee County (FL) Sheriff’s Office during the 2016 AEC. Detective Crotty is a member of the federally-funded Internet Crimes Against Children (ICAC) Task Force for Central Florida, and he developed innovative techniques for using the CVSA to conduct truth verification examinations of suspected sexual abusers of children arrested by the Central Florida ICAC Task Force.  Of major significance is the confession rate by the arrestees for unknown past sexual crimes against children, which went from zero (0%) to over 90% once the CVSA was employed as part of the investigative strategy.  The subsequent conviction rate for these offenders has been an astounding 100%! Our congratulations are offered to Det. Crotty, his agency and the ICAC Task Force for a job well done!