Texas License: C-11847 | Louisiana License: 7311-011910-LA | Alabama License: 395

Texas License: C-11847 | Louisiana License: 7311-011910-LA | Alabama License: 395

  • Gillespie Security & Investigations works with a variety of corporate entities across Texas in helping them find the information they desire.
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  • DNA evidence can hold the key to unlocking many answers. If you have an item that you suspect may contain DNA it is possible to..
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  • Personal Protection, Safety Strategies, Safe Rooms, Fire Arms Training, Home Security, Concealed Carry Training as well as Instructor Training.
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  • Investigative background checks are necessary for a variety of reasons and can be tailored to meet the unique and specific needs of the client.
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  • Gillespie Investigations can help you “locate” that hard to find person. We are highly trained investigators – not a database search company.
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For all your investigation, safety and security needs...

Gillespie Security & Investigations is a full service private investigation and security consultation company in the Austin area, and is capable of handling your investigation, safety and security needs. We offer a wide range of services for attorneys, insurance companies, corporations, investigation companies and private individuals. We also specialize in a variety of training courses for PIs, security professionals, businesses and people. Contact us today for a free consultation and let us help you find the solutions you've been looking for.


Criminal Defense

Presumption of innocence is a legal right. No person shall be considered guilty until finally convicted by a court. In a criminal trial, the burden of proof is on the government. Defendants do not have to prove their innocence....Learn more

Security Training

GSI provides a variety of instruction and courses regarding private investigations, forensic science, security, executive protection, personal defense and handgun licensing/use/safety... Learn more

Crime Scene Reconstruction

Crime Scene Reconstruction is the process of taking all available information, with a focus on physical evidence, to determine the facts and circumstances surrounding a crime, a suicide, or an accident....Learn more

A Word from Our Clients

Contact Us

605 South Bell Blvd, Suite 104
Cedar Park, TX 78613
(512) 680-5851

Best Private Investigators in Austin