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

Alabama License: 395 | Tennessee License: 8510


Gillespie Forensics & Investigations (GFI)

Founded in 2004, Gillespie Forensics & Investigations (GFI) has one primary objective: to provide comprehensive, confidential, and ethical investigative services to attorneys, businesses, organizations, courts, and individuals. As a full-service investigative agency, GFI specializes in criminal defense, forensic consultations, cold cases, crime scene reconstruction, missing persons, human trafficking recovery, background investigations, surveillance, crime scene reconstruction, infidelity investigations, personal security, and investigation/security training.

Mark Gillespie has over 36-years of investigative and forensic science experience with a master's degree in forensic science from George Washington University. A former special agent for the Air Force Office of Special Investigations (AFOSI), Gillespie has commanded many investigative units in the U.S. and overseas. After retirement from the Air Force, Gillespie became the Director of Forensic Science for the Austin (Texas) Police Department where he managed the department’s crime laboratory and forensic science services.

In 2002, Gillespie was responsible for introducing forensic science to St. Edwards University (SEU) which led to the creation of their Forensic Science Undergraduate Degree program. From 2002 to 2008, Gillespie served on the faculty at SEU as an instructor of forensic science, crime scene investigation, and criminal investigation.

Gillespie is the former president of the Texas Association of Licensed Investigators (TALI). Mark is co-founder and Chairman of the National Association for Missing and Exploited Children (NAMEC).  Mark is licensed in Texas, Alabama, Louisiana, and Tennessee. Mark is a member of many state and national PI Associations.

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