About Ryan Mann

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Ryan Mann holds a Bachelor of Science degree in psychology and criminal justice from Excelsior College where he graduated with honors (Cum Laude) He is a Licensed Private Investigator (LPI) and managing partner with the investigative firm Diamond and Mann (A120042).  Ryan is a US Air Force veteran, who was twice deployed to the Persian Gulf in support of Operation Desert Storm. He is a former under cover narcotics detective, trained by the US Drug Enforcement Agency (DEA).  Ryan has experience in executive protection, security, Interviews/Interrogations and Investigations. His deception detection course has been approved by the Florida Bar for Continuing Legal education credits and he has conducted seminars for several high level professionals such as CEOs, Attorneys, and Investigators. Ryan has been a guest lecturer for advanced criminology students at The University of Florida as well as Valencia Community College.  He has also appeared on radio shows such as “Real Money” with David Holland and “Fear is Negotiable” with Pamela Hill (Mike Roche).

Ryan is a guest speaker for the American Fire Sprinkler Association and has published articles for the Volusia Bar Association Newsletter. As a Certified Fraud Examiner (CFE), Ryan specializes in the field of white collar crime, corporate investigations and competitive intelligence.

To learn more about professional services, please visit my corporate website:


For Investigative Inquiries:


For a great online resource for body language and deception detection, please visit:




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