About Truth Verify

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Derek Samuel is a retired 22-year veteran of the Mesa Police Department and the founder of Truth Verify. Mr. Samuel has a bachelor’s degree in Criminal Justice from Grand Canyon University and has worked a variety of assignments during his career. Mr. Samuel has an extensive background in criminal investigation, having spent 17 years as a detective at the Mesa Family Advocacy Center working in the Mesa Police Department’s Domestic Violence, Homicide, and Special Victims Unit. The majority of Mr. Samuels 17 years in investigations was spent investigating sexual offenses and other serious violent crimes. 

From 2014 till his retirement in 2022, Mr. Samuel ran the Cold Case Unit with the Mesa Police Department and received recognition for his work utilizing advanced DNA technologies to solve two separate decades old investigations involving serial offenders and violent/sexual offenses. As the Cold Case Detective for MPD, Mr. Samuel traveled the country conducting investigations and working with multiple agencies and departments. The majority of Mr. Samuel’s career has been dedicated to investigations.

In 2011, Mr. Samuel became certified as a Computer Voice Stress Analyzer (CVSA) examiner. In 2019, Mr. Samuel received his Advanced Examiner Certification. Mr. Samuel is a member of the National Association of Computer Voice Stress Analysts (NACVSA). Mr. Samuel also assisted with leading the CVSA unit with the Mesa Police Department. Mr. Samuel has utilized the CVSA to conduct examinations regarding new hire volunteers for other agencies, numerous sexually related crimes, property crimes, violent offense, Internet Crimes Against Children, and Human Trafficking investigations. 

Currently Mr. Samuel is an instructor for NITV (National Institute of Truth Verification) certifying new examiners and recertifying current examiners.