Texas License: A-11847 | Louisiana License: 7311-011910-LA

Alabama License: 395 | Tennessee License: 8510


Private Investigation Training and Continuing Education

Get the education and training you’re searching for:

  • Investigations,
  • Forensics,
  • Safety & Security.

Gillespie founded the Texas Institute of Investigation, licensed by the Texas Department of Public Safety Private Security Board, to provide continuing education (CE) for PIs and security professionals as well as training for individuals who are interested in forensics, investigations and security.

Send email to mark@gillespieinvestigations.com



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Contact Us

2501 South Bagdad RD., Suite B,
Leander, TX 78641