Texas Polygraph Services
“She helped me so much I couldn't thank her more she also communicates with her clients very well and try to help the best way she can I appreciate her more than anything thank you Mary from Jalyssa ♥️🩵🌸🌺”
Best Private Investigators in Conroe, TX
10 agencies listed · 5 in Conroe · 2 open 24/7 · 4 open weekends · 8 rated 4.5+
Data verified October 15, 2026
Invictus Security and Investigations
Tri-Star Investigations & Process Service
“AMAZING process server - one of the quickest and most efficient I've seen!”
Resultquest
Jenkins Investigations
“He met with me numerous times, always took the time to answer my questions, and made sure our family understood what was happening throughout the process.”
Leatherneck Investigations
“He caught my x in several sticky situations and he is the best communicator.”
The 10 agencies on this page are the private investigators listed for Conroe, TX. What each one states about its license, its specialties and the areas it covers comes from its own website; ratings and quotes come from public reviews.
Area overview: Conroe, TX
5 of the 10 agencies we list are based in Conroe; the other 5 serve Conroe from Spring (19 mi) and Magnolia (17 mi). 9 of the agencies on this page have a rating, from 4.3 to 5.0 across 154 reviews; 1 has 50 or more reviews and 8 are rated 4.5 or higher. 2 are open around the clock; 4 are open on Saturdays and 2 on Sundays. The services the agencies on this page list most often on their websites are executive protection (2), private investigation (2) and process service (2). 6 show a license on their websites. 6 have ten or more years of experience, the longest 21 years. 3 offer urgent consultations and 3 offer a free initial consultation. We have a website on file for 8 of the agencies on this page; 8 publish a contact page and 4 list a public email. We count these figures across the agencies on this page; distances are straight-line, and hours and prices change, so confirm the details with the agency before you book.
Why are investigation agencies outside Conroe shown here?
5 of the 10 agencies have an address in Conroe. The others come from other towns. Investigators travel to the subject, so an office one county over is rarely the issue. State licensing is the thing to check.
Safesecure 360
“They provided clear, practical recommendations that helped us strengthen our emergency procedures, protect our guests and staff, and improve our overall readiness”
GPI Defense
“Mark is absolutely amazing man and i wish he worked with me the entire show!”
Checkmate Investigative Field Services
“Professional and will get the job done.”
Kelmar Global
Why these companies made our list
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