About Us | SPY191 Private Investigation Agency
SPY191 Private Detective (Thailand) Company Limited was founded in 2013 by Mr. Tharaphat Yodesakulnam, also known as "Detective Na." With a vision to provide fair, honest and trustworthy investigative services, Spy191 has, over the past 15 years, gained the trust of clients nationwide by offering comprehensive solutions, including infidelity investigations, locating missing persons, debt recovery and tracking wanted individuals.
Why Clients Trust Us?
1 Professional Team
Our team comprises experts with over a decade of experience, equipped with advanced skills in proactive and reactive investigation methods, as well as high-level psychological communication techniques, ensuring smooth and safe handling of even the most complex cases.
2Client Confidentiality is Our Priority
We strictly protect our clients’ confidentiality in every case, employing secure and discreet processes. Neither the investigators’ identities nor any client information will be disclosed to third parties.
3No Risk for Clients
Our skilled team conducts operations on behalf of clients in potentially risky or uncomfortable situations, ensuring their privacy and safety throughout the investigation.
4Strong Collaboration with Authorities
With a robust network and excellent relationships with government officials, we efficiently handle cases requiring coordination with law enforcement, such as tracking wanted individuals.
5Guaranteed Client Satisfaction
We stand behind our results. If the investigation is unsuccessful, we offer a full 100% refund or provide additional working days as compensation.
6Nationwide Coverage
Our team is ready to operate in all regions of Thailand, ensuring seamless and comprehensive service delivery.
7Transparent, Real-Time Reporting
We provide daily updates on the progress of each case in real-time and summarize the status at the end of each day, ensuring transparency and timely communication.
8Preliminary Investigation at No Additional Cost
Once hired, our team immediately starts gathering relevant data in the field to prepare for the official start date, without charging extra for this preparatory phase.
9 Client Involvement in Some Cases
For certain general cases, such as locating missing persons, new clients can accompany our investigators in the field to build trust and confidence while ensuring their privacy is protected.
10Expertise in Psychology and Strong Connections
Our team excels in applying psychological strategies to investigations, allowing for effective and efficient interactions with targets and stakeholders. Our solid connections with authorities further enhance the success of our operations.
11Verified Customer Reviews
Our credibility is reflected in genuine client reviews available on Google My Business.
With these strengths, Spy191 has earned the trust of clients and continues to receive consistent recommendations. We are ready to deliver reliable services to meet your needs in the best possible way.
Getting Started with Spy191
1Consultation
Clients can visit our office to discuss their case and provide basic details, such as the target’s full name and surname, phone number, vehicle registration, or last known address.
2Start Work, Even with Minimal Information
Even if clients have limited information, such as just a name, we are ready to provide full-service investigations using our comprehensive methods.
3Agreement and Execution
After discussing details and agreeing on pricing, our team begins on-the-ground data collection immediately without additional preparatory fees.
Social Responsibility :
Beyond standard investigative services, Spy191 also undertakes socially impactful cases, such as reuniting separated family members or collaborating with authorities on significant cases to make a positive difference in society.
If you need a reliable private detective, choose SPY191 Private Detective (Thailand) - trusted for professional investigative services.


