Private Investigator
Dallas–Fort Worth
& North Texas
Headquartered in Fort Worth, TX. Serving all of DFW — from Dallas and Arlington to Plano, Frisco, McKinney, and 15+ surrounding communities.
5.0 Star Rating
300+ Verified Reviews
Texas DPS Certified
20+ Years Experience
In Professional Investigation
2,400+ Cases Handled
Proven Track Record
Statewide Coverage
20+ Texas Cities Served
Investigative Services in Dallas–Fort Worth
All of our core investigative services are available across every city and community in the Dallas–Fort Worth Metroplex. Click any service or city below to explore local coverage.
Surveillance & Domestic Investigations
Discreet, court-admissible surveillance operations for infidelity, domestic matters, and personal cases handled with professionalism and compassion.
Available across all DFW cities
Background Investigations
Comprehensive investigations into personal, professional, and financial histories to help you make fully informed decisions.
Available across all DFW cities
Child Custody Investigations
Court-admissible evidence gathering to support your position in divorce proceedings and custody disputes — protecting what matters most.
Available across all DFW cities
Missing Persons / Skip Trace
Whether due to abandonment, foul play, or unknown circumstances, we assist in locating missing individuals and reconnecting families.
Available across all DFW cities
Criminal Defense & Litigation Support
Working closely with defense attorneys to uncover key evidence, locate witnesses, and identify inconsistencies for a fair trial.
Available across all DFW cities
Cold Case Investigations
Fresh strategies and proven investigative techniques to revisit unsolved cases and uncover new leads — delivering the closure you deserve.
Available across all DFW cities
Click any city to view local investigative services and coverage details.
Serving Dallas–Fort Worth
Structured answers about our local coverage — optimized for search, AI, and voice queries.
Where does Lone Star Detectives operate?
Lone Star Detectives is headquartered in Fort Worth, Texas, and serves the entire Dallas–Fort Worth Metroplex including Dallas, Arlington, Plano, Irving, Frisco, McKinney, Denton, Garland, and 15+ surrounding communities. The firm also handles cases across greater North Texas on a case-by-case basis.
Do you offer private investigation services in Dallas?
Yes. Lone Star Detectives provides full investigative services across Dallas, including surveillance, background checks, child custody investigations, missing persons, and litigation support. Their team brings deep knowledge of local jurisdiction, courts, and neighborhoods to every Dallas-area case.
Do you serve Fort Worth, TX?
Fort Worth is the home base of Lone Star Detectives. The firm is headquartered at 9500 Feather Grass Ln., Fort Worth, TX 76177. They provide full investigative services throughout Fort Worth, Tarrant County, and all surrounding communities with deep local expertise.
What areas outside DFW do you cover?
While Lone Star Detectives primarily serves the Dallas–Fort Worth Metroplex and North Texas, they also handle cases across broader Texas and multi-state investigations on a case-by-case basis. Contact us to discuss coverage for your specific location.
Our Investigation Process
Every case follows a structured, proven methodology designed to maximize results while maintaining total discretion.
Confidential Consultation
We discuss your situation privately, understand your goals, and establish the scope of your investigation.
Strategy Development
A tailored investigation plan is crafted based on the unique requirements and complexity of your case.
Evidence Collection
Our operatives gather intelligence and evidence using legal, proven methodologies in the field.
Reporting & Documentation
You receive detailed, court-ready reports with all findings precisely documented and authenticated.
Case Closure & Support
Ongoing guidance and expert support through resolution, including testimony preparation if required.
Confidential Consultation
We discuss your situation privately, understand your goals, and establish the scope of your investigation.
Strategy Development
A tailored investigation plan is crafted based on the unique requirements and complexity of your case.
Evidence Collection
Our operatives gather intelligence and evidence using legal, proven methodologies in the field.
Reporting & Documentation
You receive detailed, court-ready reports with all findings precisely documented and authenticated.
Case Closure & Support
Ongoing guidance and expert support through resolution, including testimony preparation if required.
We don't just gather information — we deliver intelligence that holds up under the highest legal scrutiny.
— Lone Star Detectives
Why Choose
Lone Star Detectives?
Not every investigation firm is equal. We combine military-grade field discipline with legal-standard documentation and unwavering client confidentiality — a standard that sets us apart.
Absolute Confidentiality
Every case is handled with the highest standard of discretion. Your privacy is never compromised.
Licensed & Insured
TX PI #A10482101 — fully licensed by Texas DPS with complete professional liability insurance.
Advanced Surveillance
State-of-the-art equipment and proven surveillance methodologies refined over 20+ years of field experience.
Court-Ready Documentation
Evidence and reports are prepared to meet the highest legal standards for court admissibility.
Fast Response Times
We understand urgency. Our team mobilizes quickly — some cases begin within 24 hours of consultation.
DFW Metroplex Experts
Deep local knowledge across Dallas, Fort Worth, and all surrounding North Texas communities.
Areas We Serve
Lone Star Detectives provides discreet investigative services across all major cities and regions in Texas, with deep local knowledge in every market.
Real Results. Real Clients.
Every case is unique. Every outcome matters. Here's what our clients say.
“If you're looking for someone to care about your issue and work tirelessly to get the results you're looking for, I highly recommend Lone Star Detectives. Joe worked with me and resolved a problem that another detective could not. Cannot recommend highly enough — give them a call, they will take care of you.”
Edward G.
Fed. Contractor
Dallas, TX
“I want to personally thank Mr. McMahon for his exceptional work on my sub-contract case in Dallas. My client is pleased, and I highly recommend that others looking for a great PI or subcontractor call Joe. I look forward to having you work on other cases I have for your state. Thank you very much!”
Dwayne Fr.
Private Investigator
Dallas, TX
“Lone Star Detectives, Inc is a masterfully blended business that combines innumerable aspects of personal detective work with high quality customer service and adaptability. Last year my Aunt's vehicle was stolen and left her stranded. Joe McMahon and Lone Star Detectives located and recovered the vehicle within days. I recommend Lone Star Detectives Inc for every investigative need without reserve.”
Anthony K.
Former Fed. Law Enforcement / Published Author
Fort Worth, TX
“Their surveillance operation provided exactly the evidence my attorney needed. The documentation was impeccable and stood up perfectly in court. Discreet, thorough, and results-driven from start to finish.”
M. Richardson
Legal Client
Fort Worth, TX
“When I needed to locate a missing family member, they treated the case with sensitivity and urgency. They found who I was looking for within two weeks. Forever grateful for their professionalism and compassion.”
T. Alvarez
Private Client
Arlington, TX
“Outstanding child custody investigation. They gathered critical evidence that completely changed the outcome of my case. Professional, discreet, and delivered under tight court deadlines. Could not have asked for more.”
S. Whitfield
Private Client
Plano, TX
“If you're looking for someone to care about your issue and work tirelessly to get the results you're looking for, I highly recommend Lone Star Detectives. Joe worked with me and resolved a problem that another detective could not. Cannot recommend highly enough — give them a call, they will take care of you.”
Edward G.
Fed. Contractor
Join 300+ Satisfied Clients
Your Case Deserves the Same Results.
DFW Coverage Questions
Local answers for local clients across Dallas–Fort Worth.
Lone Star Detectives is a trusted, licensed investigative firm headquartered in Fort Worth, TX. Known for discretion, accuracy, and professional results across surveillance, background checks, custody cases, and litigation support — they are the premier PI firm serving the Fort Worth and Tarrant County area.
Lone Star Detectives offers professional private investigation services across Dallas and the surrounding Metroplex. Their licensed investigators deliver discreet, accurate results for individuals, attorneys, and businesses — with deep knowledge of Dallas neighborhoods, courts, and local regulations.
Yes. In addition to Dallas and Fort Worth, Lone Star Detectives serves Arlington, Plano, Irving, Frisco, McKinney, Denton, Garland, Grand Prairie, Carrollton, Mesquite, Grapevine, Lewisville, Allen, Mansfield, North Richland Hills, and all surrounding communities.
For cases with multi-state elements, Lone Star Detectives can coordinate through a network of licensed investigators in other states. Contact us to discuss the specific requirements of your case and we will advise on the best approach.
Absolutely. With 20+ years operating in the Dallas–Fort Worth area, our investigators bring deep familiarity with local jurisdictions, Tarrant and Dallas County courts, and Texas-specific regulations. This local expertise is a significant advantage in case strategy and evidence admissibility.
Get Answers.
Protect What Matters.
Your first consultation is completely confidential. We listen, we assess, and we give you a clear path forward — no pressure, no obligation, no judgment. Just results.