KEYSTONE INVESTIGATIONS
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TEXAS BOARD CERTIFIED INVESTIGATOR
CERTIFIED CRIMINAL DEFENSE INVESTIGATOR

Licensed 
& Insured in Texas
Member of:
​Texas Association of Licensed Investigators
Texas Criminal Defense Lawyers Association
National Defender Investigator Association

Serving Travis, Williamson, Hays, Bell, Comal, Bexar and surrounding counties!  We are your key to the truth!

Check out some of our most utilized services below:

Heir Tracing/Probate Investigations
Voir Dire Research
Writ/Post-Conviction Investigations
Criminal Defense Investigations
Expert Photography
Interviews/Witness Statements/Affidavits

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What Our Clients Say

I have had the pleasure of working with Keystone Investigations on several criminal defense matters. From a defense perspective there is no team that is as thorough, prepared, and detailed when it comes to pursuing exculpatory and mitigating evidence, documenting that evidence and presenting it in court. Their work has lead to results that would not have occurred without their efforts. Keystone Investigations goes above and beyond for their clients.  They are the key component to successful representation!"    ~Tamara Needles, Attorney at Law
Dionne Hiebert embodies the pride, diligence, and attention to detail of an excellent investigator. I have worked with her on 30+ felony level cases, ranging from Assault to Capital Murder. Her reputation among other attorneys is that of keen insight, thoroughness, and responsive. I can truly trust Dionne with the hard issues pressing my cases and know that she will promptly apply the necessary tools to get the job done, and done well."     ~ Erskine Law
I trust Ms. Hiebert not only to follow my guidance, but to formulate her own plans regarding the investigation of the case. She has the intellectual acuity to review the evidence and determine the issues of the case before we even start collaborating. Ms. Hiebert takes the initiative to independently question – and determine – the strength of the evidence and the credibility of the
witnesses."      ~Kelly Gier, Board Certified Criminal Attorney

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​TX PSB License #A19436
Call now for your no cost, confidential consultation!

512-567-3211
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  • Home
  • Agency Profile
  • Investigative Services
    • Criminal Defense
    • Interviews/Witness Statements
    • Voir Dire Research
    • Surveillance & Photography
    • Writ/Post-Conviction Investigations
    • Heir Tracing/Probate Investigations
  • Expert Witness
  • Contact Us
    • Privacy Policy