PDI Investigations, Inc.
National and International Investigative Agency

Protective Services Investigation PDI Investigations conducts a comprehensive National and International investigation practices from its headquarters in Clayton, MO. For the last 20 years, the firm has assembled the most relied upon professional agents operating under one of the most experienced management teams in the industry. Many of our agents have had extensive investigative experience prior to joining the firm. Because our client profiles are extremely diverse, ranging from large international companies, international law firms, domestic law firms, and private individuals, our agents are carefully chosen to handle the complex issues that confront our clients. It is our position to maintain a close personal relationship both with our clients and the members of our investigative team. Divisions organize our firm: Corporate, Domestic, Civil and Criminal, to enhance our professional competence and our ability to serve our many different clients. No matter where you are located on the globe PDI can quickly attend to your needs.

Affiliate Offices Worldwide Include: Central and South America, the Pacific Rim, China, and Central Europe

International Investigations

PDI utilizes years of experience and vast global resources to provide timely and professional international investigation services. Our accredited staff will help uncover information pertinent to your needs to get you the answers you desire. Some of our expertise includes personal/corporate surveillance, investigating kidnappings for ransom, and unresolved murder investigations.

Corporate Investigations

PDI caters to the corporate world by offering insurance fraud investigation, corporate security measures, and employee background checks. With the ability to assemble a team within 48 hours, PDI can provide strike security, executive protection, and background checks for all your corporate needs.

Domestic Investigations

PDI services domestic investigations through implementing surveillance, professional private investigation and background checks. Whether you are suspicious about a cheating spouse or concerned about a personal threat, PDI's team will employ their experience to fulfill your domestic investigation needs.

Civil Investigations

PDI provides civil investigations that allow the legal community to build evidence for their cases. Through asset searches, surveillance, background checks and personal injury investigations, PDI’s expert team of investigators will conduct video surveillance and undercover work to perform professional civil investigations.

Criminal Investigations

PDI assists the legal industry with criminal investigations and witness protection. Our team provides computer forensic services, risk assessments, and detailed investigations to aid legal teams with compelling evidence for their cases.

Michael Barbieri, Ph.D. -
Criminal Investigation Expert Analyst.