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Terry Madory

Madory Professional Services is a licensed private investigation firm, providing polygraph services and business security consulting, based in California’s Inland Empire, with over three decades of law enforcement investigative experience. 

As a professional firm, Madory Professional Services offers private and corporate investigation, as well as, pre-employmnet background investigation for persons applying for sensitive postitions. 

Madory Professional Services provides efficient, straightforward investigations, offering thorough reports and recommendations so you can make informed decisions.  Comprehensive investigations are supported, as neccesary, with witness depositions and court testimony. Court testimony, depositions and administrative hearings are available.  

Madory Professional Services are experts in layered corporate security and personnel mitigation. Services include standardized objective pre-employment background checks, applicant polygraph and employee personnel investigations, in addition to Title 9/Clery Act investigations, for federally compliant learning institutions.


Madory Professional Services utilizes trained law enforcement, Crime Prevention Specialist programs and methods to survey your particular corporate security needs. We can investigate and mitigate staffing workplace bad behavior, fraud and espionage issues. Introducing practical training, policies and informational programs, to reduce victimization and liability in the workplace, free case reviews and consultations always available.

Madory Professional Services is a Proud

Marine Corp Veteran Owned Company 

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