Lead Detective John W. Sibbald

We are Platinum Key Investigations, a respected Private Investigation Firm based in Marietta/Atlanta, Georgia. With years of experience, our licensed, bonded and professional investigators are here to help. Our team boasts over a decade of combined experience in investigations, polygraph examinations, process serving and security. Bottom line, we are well equipped to handle most types of cases that come our way at reasonable rates.

Get in touch to schedule your initial FREE consultation today.


Asset Protection

Background Checks

Child Custody

Corporate Theft

Domestic Cheating


Polygraph Testing

Process Serving


55 Atlanta Street SE, Suite 203, Marietta, Ga, 30060
Office Phone: 470.400.7038

Fax 678.653.7482



Licensed & Bonded#: PDC002674 | #PDE050116

Exposed & Concealed Firearms Approved

Member of GAPPI, GAPPS, and APA Associate

On ServeNow, PINow, ServeManager, and Tracers

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