Who is Guardian Investigations?

Guardian Investigations is woman owned and comprised of investigators with over 30 years of private investigative and FBI experience. We possess a broad scope of investigative solutions for business or personal situations to get you the information you need.

Our skills are results oriented. We combine our fact-finding experience and state-of-the-art technologies to get the job done. Through our experience, we have created a network of worldwide resources proven to get the answers you need in the most cost-effective manner.


Consider the advantages of hiring a woman investigator:

  • Female investigators are less likely to be detected
  • During undercover investigations, a female investigator may be able to get closer to the subject
  • Female investigators have a calming effect during volatile situations
  • Female investigators are less intimidating. Women and children are more likely to talk to a female investigator, particularly in cases of a sexual nature

Margie Hildreth

CEO and licensed investigator

Margie served in the FBI for 16 years. She was involved with complex drug trafficking investigations, money laundering cases and analysis of investigations. A graduate of Texas Tech University, she worked for 10 years in San Antonio where she was involved with major cases, including the murder of Federal Judge John H. Wood in 1979. The remaining six years of her FBI career were spent in McAllen, Texas, concentrating on the analysis of drug trafficking investigations. She has spent the last 15 years conducting a wide variety of private investigations for individuals, corporations, school districts, municipalities and legal teams.

Margie is known for getting the job done and investigating in a sensitive and conscientious manner to insure your privacy.

Texas Association of Licensed Investigators
National Association of Women Business Owners
San Antonio Women's Chamber of Commerce