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Professional office building representing licensed private investigators in Texas
Klein Investigations logo, licensed private investigators in Texas

"When you need to know"

Professional investigative, protection, and process services trusted since 1992.

Trusted by 'klients' who require discretion, accuracy, and experience. One of the first and longest standing firms in TX.

1992

Established

Family Owned

Operations

A-09257

Texas PI License

Government & Legal

Experience

National & International

Reach

Service Divisions

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Investigative Services

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Protection & Security

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Process Service

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Surveillance & Countermeasures

Trusted by Clients Across Texas and The United States

5/5

Grady Gray, TX

If you’re in need of an investigation, or security, or even a private protection officer, Klein is the place to call!! Always professional and always ready to assist you in your needs!!

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Google Review

5/5

Sabrina Gann, TX

This organization is absolutely fantastic!! I would highly recommend this place if you need any kind of help. Very professional and they get the job done!!! Thanks guys!!!! sabrina gann

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Google Review

5/5

Shandi Conner, TX

Mr. Klein is the most knowledgeable individual I have ever had the pleasure of speaking with. He cares about what is best for our children. Without him, I have no idea how we would have got through this past week! Thank you so much Mr. Klein for everything you have done for my family and me. We will be forever gracious for everything you have done for us!

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Facebook Review

Investigative evidence board representing professional investigation services

Our Values

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Our work is guided by principles that have defined our firm for more than three decades.

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Integrity

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Professionalism

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Confidentiality

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Experience

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Commitment

Meet Our Investigators

Our investigators bring decades of experience across government, legal, and private-sector investigations.

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Philip R. Klein, TPLI-PPO

CEO, Emeritus

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Caroline K. Gear, TPLI, M.Ed

President

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Charles “Charley” Klein, TPLI-PPO

Co-President, Operations

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From the Field,
to the Media

Real investigations. National attention.

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Published Books

The Klein Files book series explores real investigations that captured national attention, written by Philip Klein.

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The Klein Files Podcast

Case discussions, investigative insight, and current events from the Klein Investigations team.

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Video Media

Promotional videos highlighting the scope of investigative and personal protection services provided by Klein Investigations.

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Public Info

Public-facing materials and informational media related to investigative services and outreach.

Talk to Our Investigators

Reach out to discuss your situation and learn how our team can assist. All inquiries are handled discreetly and professionally.

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