About Us
About our Director and Examiner
Alton A. Grannum is a certified Private Investigator and Forensic Psychophysiologist in Jamaica.
He is proud to be a member of the prestigious American Polygraph Association, demonstrating his commitment to excellence and adhering to the highest standard
In March 2013 Alton attended the Academy of Polygraph Science in St Petersburg (Florida) a Division of Dr. Richard C. Poe and Associate Inc. He completed his 400-hour course in Polygraph science, earning his certification as a forensic Psychophysiologist from the American Polygraph Association.
Additionally, in February 2014, he underwent training in the Reid technique of interviewing and interrogation, completing both the basic and advanced courses offered by John E. Reid and Associates.
This accomplishment led to his certification as an interrogator, further enhancing his expertise in obtaining accurate and reliable information.
Alton’s dedication to professional development is evident in his participation in various specialised training programs. He completed a course on Executive Protection offered by the American Society for Industrial Security (ASIS) in July 2004.
Furthermore in May 2002, he successfully undertook a Crime Scene Photography course at the Metropolitan Police Institute in Miami-Dade County, Florida
Qualification and Accreditation
Certified Forensic Psychophysiologist (Kingston, Jamaica)
Certified Interrogator
Certified Private Investigator (P.S.R.A)
PSCOT Examiner Certification
Graduated Education – Forensic Psychophysiology
Graduate of Advance Interview and Interrogation Training. John E. Reid and Associate.
Professional Membership and Affiliation
American Polygraph Association (Associate Member)
Alton’s A. Grannum maintains professional memberships and affiliations that keep him connected to the latest industry advancements and best practices. He is an associate member of the esteemed American Polygraph Association, Further exemplifying his dedication to staying at the forefront of the field.
At Grannum’s Polygraph & Investigation Service Ltd., we pride ourselves on providing exceptional investigative services backed by expertise, professionalism, and a commitment to delivering accurate results. Trust us to handle your investigative needs with the utmost confidentiality and integrity. Contact us today to learn more about how we can assist you.
Chief Examiner & C.E.O and founder of
Grannum's Polygraph & Investigation Services Ltd.
Certified By
At Grannum’s Polygraph and Investigation Services Limited, our mission is to provide exceptional and confidential polygraph and investigation solutions.
Guided by integrity, we’re a trusted partner for individuals and organisations, delivering accurate results with cutting-edge techniques.
Committed to professionalism and client satisfaction, we strive to bring clarity and resolution to the most challenging situations, setting the benchmark for excellence in our field.”
At Grannum’s Polygraph and Investigation Services Limited, we aspire to be the premier provider of trusted investigative solutions. We aim to set the industry standard for excellence and deliver solutions that exceed expectations.
We’re committed to truth-seeking and professionalism, and we aim to foster a transparent, respectful environment. As we expand globally, we seek enduring relationships based on trust and confidentiality. Our goal is to make a positive impact on society, upholding the highest ethical standards.
Through continuous improvement and team empowerment, we envision contributing to a safer, more informed world.”
Team Members
Michael L. Henry
LEAD INVESTIGATOR
Tameka Walker
COMPANY SECRETARY
