Credibility Assessment of Maryland Polygraph Services

Credibility Assessment of Maryland Polygraph ServicesCredibility Assessment of Maryland Polygraph ServicesCredibility Assessment of Maryland Polygraph Services

Credibility Assessment of Maryland Polygraph Services

Credibility Assessment of Maryland Polygraph ServicesCredibility Assessment of Maryland Polygraph ServicesCredibility Assessment of Maryland Polygraph Services
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Credibility Assessment of Maryland Polygraph Services

William F. Gonnelli

William F. GonnelliWilliam F. GonnelliWilliam F. Gonnelli

Retired FBI Supervisory Special Agent, Polygraph Examiner

Polygraph Services

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Bill Gonnelli

Attorneys - Business - Government Agencies - Private Individuals

Call on a real polygraph professional who will provide quality results that you can trust. Bill Gonnelli's years of FBI polygraph and law enforcement experience bring world-class credibility and reliability to his polygraph test results. The last thing you want to do is spend money on an inaccurate polygraph examination. Inaccurate test results can cost you more than just your money; It can cost you your job, your relationship, your reputation, or, in criminal matters, harm your defense. The examiner does make a difference, and Bill’s expert results have been used by judges and prosecutors countless times.


Credibility Assessment of Maryland offers polygraph services throughout Maryland, Delaware, Pennsylvania, Washington, DC., New Jersey and New York.


Areas where the polygraph has proven to be invaluable:


  • Criminal Defense
  • Clearing the Wrongfully Accused
  • Verification of Information & Statements
  • Domestic Disputes
  • Sex Crimes & Allegations of Sexual Misconduct
  • Law Enforcement
  • Government & Security Screening
  • Employee Thefts
  • International Examinations in Support of Vetting for U.S. Entities

About Bill

American Polygraph Association
The Society of Former Special Agents of the FBI
Maryland Polygraph Association

Credibility Assessment of Maryland Services Polygraph.


Attorneys - Business - Government Agencies - Private Individuals.


All polygraph exams are conducted by William F. Gonnelli, a former FBI Supervisory Special Agent and Polygraph Examiner. Bill has over 30 years of law enforcement and security experience. Choosing a well-qualified polygrapher with the proper credentials and background experience is critical to obtaining the results on which you can rely. The examiner that you choose can make a difference!


Bill is a highly accomplished examiner and has conducted in excess of 4000 polygraph examinations across the U.S. and overseas. He is an extensively trained examiner and a graduate of the Department of Defense Polygraph Institute (which is now called the National Academy for Credibility and Assessment), and is acknowledged as the top polygraph school in the world.


Bill is a certified polygraph examiner and is a Full Member of the American Polygraph Association (APA) and the Maryland Polygraph Association (MPA) and the Society of Former FBI Special Agents.

Credibility Assessment of Maryland Services Polygraph.

Call for a Free Consultation.

William F. Gonnelli

Phone: (443) 878-3432

Email: caofmaryland@gmail.com

Mailing Address: 35764 Atlantic Avenue, #195 OceanView Delaware 19970-9998


All scheduled polygraph examinations require a security deposit of $250 payable by credit card.


This deposit is non-refundable, day of the examination client is responsible to pay the agreeable balance of the examination.


If the client fails to show for the examination without notice client will be responsible for the full examination fee. 

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Credibility Assessment of Maryland Polygraph Services

35764 Atlantic Avenue, #195, Ocean View, Delaware 19970

Business: (443) 878-3432 Email Us: caofmaryland@gmail.com

Copyright © 2024, Credibility Assessment of Maryland Polygraph Services. All Rights Reserved.


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