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ROY Clugston, Jr.

6440 S. Lewis Ave. Suite 2700
TULSA, OK 74136
(918) 622-7008

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Alt. Phone: (918) 232-6312

Clugston Polygraph and Investigative Services is owned and operated by Roy L. Clugston, Jr.  Roy is an honorably discharged veteran of the United States Army with over 35 years of experience in law enforcement, polygraph examinations, investigations, security consulting, and loss prevention. 

As a Tulsa County Deputy Sheriff, he served as a training officer, robbery and homicide investigator and supervisor in the county jail.  Roy was a deputy sheriff and jail director for the Rogers County Sheriff's Department.  He has worked as a federal court security officer for the U.S. Marshal's office in Tulsa, Oklahoma.  Roy is a 1972 graduate of the National FBI Academy.

Roy graduated from the Backster School of Lie Detection and completed an American Polygraph Association approved internship in 1978.  He was the first Polygraph Examiner with the Tulsa County Sheriff's Department.  Roy also performed polygraph examinations for the Tulsa Police Department and Tulsa County District Attorney's office.  Roy has been a Certified Polygraph Examiner since 1978; his Oklahoma license is #16.  Roy is a member of the American Polygraph Association and the Oklahoma Polygraph Association.   He has owned and operated the Clugston Polygraph Agency since 1980. 

Roy has conducted internal investigations and security consulting for defense contractors, large hotels, major retailers and the Tulsa County Housing Authority.   Roy has screened applicants, performed polygraph examinations, conducted audits and internal investigations for several major corporations.  He is currently licensed as a Private Investigator by the state of Oklahoma and serves as Vice-President of the Tulsa chapter of the Oklahoma Private Investigator's Association.

Clugston Polygraph and Investigative Services offers a variety of investigative services.  

Either before or after your judgment is obtained, we will locate assets held by your adversary.  These include, but are not limited to bank accounts, bonds, employment compensation, mutual funds, real property, stocks and vehicles anywhere in the world.


Most everyone finds the need at one time or another to learn more about another person.  This need may be a pre-employment investigation or a pre-marital inquiry.  Background information can be obtained for any legal purpose and in many cases does not require the permission of the person being investigated.

We are available to investigate any accident, crime, incident or lawsuit.  We will locate and interview witnesses, obtain statements, serve subpoenas, conduct surveillance and gather other evidence in your case.

Certified polygraph examiners are available to conduct exams for any legal purpose.  Our examiners will come to your site or you may have testing done in our offices. All employment related exams comply with the Federal Employee Polygraph Protection Act of 1988.  We also conduct polygraph examinations in conjunction with marital infidelity investigations.


Once you have exhausted all your resources to find someone, you may need to contact a professional to get the information you want. Our services are discreet, very thorough and will help you when you've "hit a dead end" in your search.



You may have concerns about the fidelity of your mate.  Regardless of the nature of your relationship or domestic partnership, you need to be assured that your mate is faithful.  


Our investigators are available with state-of-the-art equipment to conduct surveillance, either mobile or stationary, on very short notice.  We generally use videotape to document activities that are observed.



Our investigators use telephone records to assist in the worldwide location of people and to determine their contacts and associates.  Cellular phone records are available for periods of 30, 60 or 90 days, depending on the scope of the investigation.  Besides locating missing persons, this information is used for a variety of purposes including identification of criminal conspirators.

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