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Relying on 36 years of experience in forensic science, Mark Gillespie is skilled at evaluating evidence in all types of investigations.. 


Gillespie Forensics & Investigations, located in Leander, Texas (a suburb of Northwest Austin), is a full-service private investigation, forensic and  safety/security consultation  company. We offer a wide-range of services for private individuals, attorneys, insurance companies, corporations, and investigation companies. Contact us today for a free consultation and let us help you find the solutions you've been looking for.

Call us if you have a need for:

  • Cold case investigations/consultations

  • Criminal Defense Investigations

  • Death investigations

  • Manner of death issues/disputes

  • Review of autopsy reports

  • Crime scene reconstruction/consultation

  • 3-D Measurement, Imaging & Realization Technology for Crime Scenes/Accidents

  • Forensic analysis

  • Expert testimony

  • Security consultation & threat assessments

  • Missing persons

  • Active Shooter Survival Training


GFI Gillespie Forensics and Investigations  can evaluate unsolved death cases to determine if new analysis or forensic techniques could help develop new leads and/or bring closure to the case.

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 Gillespie Forensics and Investigations utilizes a number of database resources and experienced investigators to obtain relevant and current information regarding the subject of the investigation. Learn More

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​Gillespie Forensics and Investigations can help you “locate” that hard to find person.

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