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About us

Ventura Polygraph and Investigations is a Full Service Private Investigation Agency that provides Professional Services to all areas of Ventura, Santa Barbara, and Los Angeles  Counties. We gladly provide service to Attorneys, the General Public, Insurance Companies and Businesses, and all matters are handled in a Professional, Confidential and Discreet Manner. Also, investigations are conducted in a thorough, accurate and timely manner and with the RESULTS you are looking for.

Kelly Duhs is a Licensed Private Investigator, #26059 in the State of California and a Graduate of an APA Accredited Polygraph Institute, Orange County Polygraph Institute.

-Orange County Polygraph Institute is recognized by the American Association of Police Polygraphists  (AAPP) and The California Association of Polygraph Examiners (CAPE).

Kelly was Federally Trained in Polygraph Testing at the DACA Level (Defense Academy for Credibility Assessment). She received Extensive Training in Polygraph Testing in the areas of Criminal, Attorney / Client, Business, Personal, Workplace and Employee Exams. Also to include the Private Sector, Civil and Domestic Matters.

Also, Kelly was Formally Trained in Law Enforcement, Criminal and Pre Employment examinations by Top Members of the LAPD Polygraph Unit.

Kelly Duhs is the Lead Investigator and Examiner on all cases varying from Legal, Personal, Business, Work Place, and the Private Sector. I conduct investigations in areas of Attorney Investigations, Civil/Criminal, Insurance Fraud, Domestic, Relationships, Adultery, Child Custody, Child Visitation, Divorce and Background Investigations.

Ventura Polygraphs and Lie Detectors

Ventura Polygraph provides professional, confidential polygraph examinations and lie detection testing to businesses, organizations and private individuals throughout the State of California. Our polygraph testing can be conducted at our offices or our mobile unit can travel to your home or business, or wherever you need the polygraph examination to take place.

Ventura Polygraph is a division of Ventura Investigations, a Ventura County Investigation Agency. Ventura Polygraph and Investigations is owned and operated by Kelly Duhs,a veteran private investigator with over 15 years of experience. We are fully licensed, insured and bonded so you can be assured that your polygraph examination will be conducted with the highest level of professionalism and integrity at all times.

At Ventura Polygraphs, we use the latest state-of-the-art polygraph and lie detection testing equipment and our examinations are conducted by trained, certified and experienced polygraph professionals to ensure accurate results.

When you need the services of a qualified polygraph examiner, call the experts at Ventura Polygraph. Our staff of dedicated professionals will be happy to answer any questions you may have and schedule an appointment for you.

Beware of the polygraph scams out there!!!!! Unfortunately, there is no licensing requirement for Polygraph Examiners in California so there are scams and frauds out there, all over the place. Please call for further information or advice on shopping for an examiner in your area. Also, you can contact the American Polygraph Association for a Qualified Examiner in your area. Call Kelly for more details.



- Direct 805-432-3540




We offer Investigation and Polygraph services throughout Ventura, Santa Barbara and Los Angeles Counties - Including Simi Valley, Moorpark, Thousand Oaks, Agoura Hills, Westlake Village, Ventura, Oxnard, Camarillo, San Fernando Valley, Los Angeles. We look forward to hearing from you.

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