Professional Polygraph & Investigation Services

Your trusted partner for accurate truth verification and confidential investigations across Jamaica.

Welcome to Grannum’s Polygraph & Investigation Services

At Grannum’s Polygraph & Investigation Services Ltd., we provide professional and confidential polygraph (lie detector) testing and private investigation services throughout Jamaica. Our team of certified examiners and experienced investigators is dedicated to uncovering the truth with integrity and precision.

suspicious-man-passes-lie-detector-in-the-office-2026-01-08-23-30-15-utc

Polygraph Testing

Accurate lie detection tests are conducted with the utmost confidentiality.

63229 (1)

Private Investigations

Discreet surveillance and investigations to uncover the truth.

2150943428

Surveillance

As surveillance experts in the Kingston Metropolitan area.

119643

Security Consulting

We assess the resolution of risks, problems, and security issues.

Why Choose Us

At Grannum’s Polygraph & Investigation Services Ltd, we understand that every case requires precision, confidentiality, and professionalism. We deliver reliable results while upholding the highest ethical standards.

Frequently Asked Questions (FAQs)

How accurate is a polygraph test?

Polygraph tests are widely regarded as a reliable tool for truth verification when conducted by trained professionals. While no method is 100% infallible, our certified examiners use proven techniques and modern equipment to deliver highly accurate and dependable results.

Is the process confidential?

Yes. Confidentiality is a core principle of our service. All client information, test results, and investigation details are handled with the highest level of discretion and are only shared with authorized parties.

How long does an investigation take?

The duration of an investigation depends on the complexity and scope of the case. Some cases can be completed within a few days, while more detailed investigations may take longer. We provide estimated timelines during the initial consultation.

Are polygraph results legally admissible?

The admissibility of polygraph results varies depending on the legal context and jurisdiction. While results may not always be used as direct evidence in court, they are often valuable for internal decisions, legal strategy, and dispute resolution.

How much does a polygraph test cost?

Costs vary based on the type of test, the number of individuals involved, and the specific requirements of the case. We recommend contacting us for a confidential consultation to receive an accurate quote tailored to your needs.

Do you offer services for both individuals and businesses?

Yes. We provide services to private individuals, corporate organizations, legal professionals, and institutions requiring investigative or verification services.

What should I expect during a polygraph test?

The process typically includes a pre-test interview, the examination itself, and a post-test review. Our examiner will explain each step clearly to ensure you are comfortable and fully informed throughout the process.

How do I get started?

You can contact us directly via phone or submit a confidential inquiry through our website. Our team will guide you through the next steps and recommend the most appropriate service for your situation.